[{"@context":"https://schema.org","@type":"Organization","@id":"https://www.cncliq.com/#organization","description":"Browse products and filter by category.","name":"NingboLiqin","url":"https://www.cncliq.com","address":{"@type":"PostalAddress","streetAddress":"NO.68ketaiRoad, JishigangTown, HaishuDistrict, NingboCity, Zhengjiang, Province,China ","addressLocality":"Ningbo","addressRegion":"Zhejiang","addressCountry":"CN","postalCode":"315177"},"geo":{"@type":"GeoCoordinates","latitude":29.8897,"longitude":121.4206},"logo":{"@type":"ImageObject","url":"https://www.cncliq.com/image/img/logo.png"},"image":"https://www.cncliq.com/image/img/logo.png","email":"zhouli@chinaliqin.com","telephone":"+86 18757148656","contactPoint":{"@type":"ContactPoint","email":"zhouli@chinaliqin.com","telephone":"+86 18757148656"},"sameAs":["https://www.facebook.com/","https://www.instagram.com/liqincnc/reels/","https://www.youtube.com/@liqinCNC/shorts","https://www.pinterest.com/","https://www.linkedin.com/","https://twitter.com/","https://www.tiktok.com/@liqincnc"]},{"@context":"https://schema.org","@type":"WebSite","@id":"https://www.cncliq.com/#website","url":"https://www.cncliq.com","name":"NingboLiqin","publisher":{"@id":"https://www.cncliq.com/#organization"},"potentialAction":{"@type":"SearchAction","target":"https://www.cncliq.com/search?search={search_term_string}","query-input":"required name=search_term_string"}},{"@context":"https://schema.org","@type":"WebPage","@id":"https://www.cncliq.com/en/products#webpage","url":"https://www.cncliq.com/en/products","name":"Product List","description":"Browse products and filter by category.","headline":"Product List","inLanguage":"en","about":{"@id":"https://www.cncliq.com/en/#organization"},"productModules":[{"@id":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate","@type":"WebPageElement","name":"Medical-Grade Dental Chair Structural Articulation & Base Plate","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Positioning

\\n

The Dental Chair Articulation and Structural Base Support Plate (Part No. Series: 107-028-150 / 113-003-871) is an indispensable, heavy-duty structural interface engineered specifically for next-generation multi-functional dental treatment units and oral surgery workstations. Positioned at the critical kinematic junction between the main hydraulic/electromechanical elevation actuator, the patient seating sub-assembly, and the central rotation axis, this component serves as the mechanical backbone of the entire dental unit.

\\n

Medical dental environments require structural components that deliver an uncompromising balance of high load-bearing capacity, dynamic kinematic stability, corrosion resistance against aggressive chemical disinfection, and clean integration of fluidic and electrical utilities. Designed to meet stringent international medical device manufacturing standards, this dental chair plate delivers rock-solid structural integrity, micron-level machining precision, and a specialized surface finish that together elevate the reliability, safety, and operational smoothness of modern dental equipment.

\\n

2. Premium Engineering Materials & Metallurgical Properties

\\n

2.1 A356-T6 / A365-T6 Cast Aluminum Alloy Matrix

\\n

The foundation of this structural plate is high-integrity A356/A365 structural aluminum alloy, carefully selected for its superior strength-to-weight ratio, excellent ductility, and optimal castability:

\\n

\\n
Alloy Purity & Casting Integrity: The aluminum-silicon-magnesium composition provides dense, defect-free metal consolidation during the casting process, preventing common microstructural flaws such as internal shrinkage cavities, gas inclusions, and porosity.
\\n
\\n
T6 Heat Treatment Regimen: Following the casting operation, the component undergoes a complete solution heat treatment followed by precision artificial aging (T6 temper). This metallurgical transformation homogenizes the solid solution and forms densely distributed precipitate hardening phases throughout the crystalline lattice, maximizing yield strength, tensile toughness, and fatigue resistance under high cyclic dynamic loading.
\\n

\\n

2.2 Structural Topology Optimization & Rib Reinforcement

\\n

Unlike standard flat plates that suffer from flexural distortion under offset patient loads, this chair plate incorporates an advanced reverse-side radial stiffener matrix:

\\n

\\n
Radial Load Dispersion Ribs: A web of structural reinforcement ribs radiates outward from the central load-bearing hub to the peripheral mounting ears. This architectural layout channels multidirectional bending and torsional moments away from the center, effectively distributing mechanical stress throughout the entire perimeter.
\\n
\\n
Targeted Material Distribution: High-stress zones feature reinforced localized wall thickness, while non-load-bearing regions are sculpted to minimize unnecessary weight. This optimization ensures a minimum nominal wall thickness across thin-gauge sections without sacrificing structural stiffness, keeping the overall assembly lightweight and easy to manipulate during factory integration.
\\n

\\n

3. Precision Manufacturing & Advanced Processing Workflow

\\n

The manufacturing lifecycle of the dental chair plate reflects a tightly controlled sequence of metallurgical, mechanical, and surface engineering processes:

\\n

3.1 Casting, Forming & Thermal Stress Relief

\\n

\\n
The initial rough casting is formed in precision permanent molds to achieve consistent dimensional profiles and smooth raw surface contours.
\\n
\\n
Post-casting thermal annealing and structural straightening eliminate residual internal stresses accumulated during solidification, preventing post-machining warping or dimensional relaxation over years of active clinic operation.
\\n

\\n

3.2 Multi-Axis CNC Precision Machining

\\n

Following casting qualification, the component transitions to state-of-the-art multi-axis CNC machining centers for single-setup geometric refinement:

\\n

\\n
Central Pivot Bore & Bearing Race: The large circular central aperture and its concentric locating counterbore are high-speed turned and milled to exacting tolerances, providing seamless seating for central rotary bearings, slew rings, and pivotal articulation shafts.
\\n
\\n
Machined Pad Coplanarity & Flatness: All peripheral and central mounting pads are machined in coordinated reference passes. Total flatness across all functional contact pads is inspected against tight geometric tolerance bands, eliminating assembly bind, uneven bolt preload, and rocking when bolted to the patient chair frame.
\\n
\\n
Complex Threaded Hole Arrays: The plate features a series of multi-standard fastener points tailored for diverse interface requirements:
\\n
- \\n
  Six radial mounting positions arranged in an equidistant 60-degree circular bolt pattern with 1/4-20 UNC-2B internal threads for secure anchoring to the primary chassis.
  \\n
- \\n
  Secondary mounting points with 10-32 UNF-2B tapped holes (including through-hole and controlled-depth blind configurations designed with specific clearances to ensure no breakthrough on aesthetic exterior faces).
  \\n
- \\n
  Micro-fastener points featuring M3 metric threads for mounting internal sensor brackets and position limit switches.
  \\n
\\n

\\n

3.3 Cable Routing & Pass-Through Windows

\\n

Modern dental chairs route extensive arrays of pneumatic supply lines, high-pressure water feeds, surgical suction tubes, and digital sensor buses through the articulation core:

\\n

\\n
The plate integrates dedicated wiring clearance channels and smooth pass-through apertures.
\\n
\\n
All routing edges and slot transitions undergo dedicated automated and manual deburring, resulting in continuous rounded radii (such as R3.3 blends) that completely eliminate burrs and sharp edges, preventing abrasion or pinching of flexible utility lines during chair elevation and recline cycles.
\\n

\\n

3.4 Medical-Grade \\\"Gray Granite\\\" Powder Coating & Selective Masking

\\n

The exterior surface of the plate is protected by an industrial-grade architectural powder coat finish:

\\n

\\n
Surface Preparation: The unmasked cast exterior undergoes thorough solvent degreasing and surface conditioning to ensure maximum chemical and physical bonding of the polymer coating.
\\n
\\n
Specialized Color & Texture Formulation: The coating is formulated in an elegant \\\"Gray Granite\\\" textured finish (PTUS37AS19 by Powder Technology, Inc.). This micro-textured finish provides high tactile quality, eliminates specular glare under dental operating lights, and hides superficial scratches.
\\n
\\n
Precision Film Thickness: The coating application is maintained within a strict 1 to 3 mil thickness envelope, achieving complete, uniform coverage while preventing excessive buildup that could lead to edge chipping or flaking.
\\n
\\n
Comprehensive Thread & Interface Masking: Before entering the electrostatic spray booth, all functional tapped holes (1/4-20, 10-32, M3), central bearing fits, and critical datum surfaces are sealed with custom thermal masking plugs and tapes. This guarantees that all machined interfaces remain free of paint overspray, maintaining zero-clearance mechanical fits during assembly.
\\n

\\n

4. Application Scenarios & System-Level Integration

\\n

The chair plate is purpose-built for diverse clinical environments where structural dependability and hygienic integrity are paramount:

\\n

\\n
Next-Generation Dental Treatment Consoles:
\\n
- \\n
  Functions as the core horizontal support interface between the bottom scissor-lift elevation column and the motorized backrest/seat articulation sub-frame.
  \\n
\\n
\\n
Specialized Oral & Maxillofacial Surgical Chairs:
\\n
- \\n
  Delivers absolute structural rigidity during intricate microsurgery, dental implant placements, and prolonged endodontic treatments where any mechanical wobble, vibration, or drift would compromise surgical precision.
  \\n
\\n
\\n
High-Throughput Clinical Environments:
\\n
- \\n
  Built to endure the demanding operational tempo of hospital dental wards and high-volume outpatient clinics, handling continuous adjustments for hundreds of patients daily without structural fatigue or joint loosening.
  \\n
\\n
\\n
Intense Disinfection & Sanitization Regimes:
\\n
- \\n
  Resists routine wipe-downs with harsh quaternary ammonium compounds, alcohol-based solutions, and chlorine-based surface disinfectants without discoloration, bubbling, or degradation of the protective finish.
  \\n
\\n

\\n

5. Quality Inspection Protocols & Metrology

\\n

To ensure zero-defect delivery for critical medical equipment, each production batch adheres to an exhaustive Quality Assurance (QA) and In-Process Quality Control (IPQC) framework:

\\n

\\n
First Article & In-Process Inspection: Dimensional verification is executed at regular production intervals using calibrated vernier height gages, digital calipers, depth micrometers, and thread go/no-go plug gages.
\\n
\\n
Comprehensive Go/No-Go Fixturing: Complex hole-pattern relationships, locating dowel positions, and slot geometries are cross-checked using dedicated hard inspection tooling to guarantee 100% plug-and-play assembly line compatibility.
\\n
\\n
Visual & Surface Quality Control: Coated surfaces are inspected under standardized diffuse lighting to verify color uniformity, texture consistency, and the complete absence of runs, sags, pinholes, or particulate contamination.
\\n

\\n

6. Key Product Advantages & Engineering Highlights

\\n

\\n
Optimized Rigidity-to-Weight Performance: The A356-T6 aluminum construction backed by radial ribbing provides the structural stiffness of heavy cast iron at a fraction of the weight, reducing the mechanical burden and energy draw on chair elevation motors.
\\n
\\n
Zero-Backlash Mechanical Alignment: Precision CNC-machined reference surfaces and balanced fastener layouts prevent mechanical play and squeaking, ensuring smooth, silent recline and elevation motions that maximize patient comfort.
\\n
\\n
Superior Environmental & Chemical Resilience: The specialized Gray Granite powder coating offers outstanding barrier protection against moisture, physiological fluids, and hospital-grade sanitizers, preventing galvanic corrosion and surface oxidation.
\\n
\\n
Ergonomic Safety & Cable Longevity: Fully deburred cable channels with generous transition radii eliminate the risk of severed signal lines or fluid leaks, protecting both the machine’s internal systems and clinical technicians during routine maintenance.
\\n

\\n

7. Commercial Value & OEM Benefits

\\n

Partnering with a proven manufacturing process for this critical dental chair plate delivers substantial strategic value to dental equipment OEMs:

\\n

\\n
Accelerated Assembly Line Throughput: High dimensional repeatability and pristine, pre-masked threaded connections eliminate on-site re-tapping, shimming, or fitting modifications, drastically cutting assembly cycle times.
\\n
\\n
Drastic Reduction in Warranty Claims: The high fatigue resistance of heat-treated aluminum and durable powder finish minimize service calls related to structural sagging, fastener stripping, or cosmetic wear over a decade-long product service life.
\\n
\\n
Enhanced Brand Prestige: The refined granite-texture aesthetic and ultra-smooth mechanical performance reinforce the dental brand's reputation for premium quality, safety, and modern ergonomic design in global healthcare markets.
\\n
\\n
Full Medical Regulatory Compliance: Standardized process inspection records, material traceability, and non-toxic, RoHS-compliant surface finishes simplify customer submissions for international medical device certifications, including CE, FDA, and ISO 13485 audits.
\\n

\\n

FAQ

\\n

Q1: Will the coating peel or corrode with frequent use of medical disinfectants?

\\n

No. The component features a specialized medical-grade \\\"Gray Granite\\\" powder coating (controlled at 1 to 3 mils thickness) that offers exceptional adhesion, scratch resistance, and chemical durability against regular wipe-downs with alcohol- and chlorine-based clinical disinfectants.

\\n

Q2: Do threaded holes and mating surfaces require secondary cleaning or re-tapping during OEM assembly?

\\n

No. All precision imperial/metric threaded holes (1/4-20, 10-32, M3, etc.) and bearing surfaces are 100% masked prior to coating. This prevents any paint overspray buildup, enabling immediate, zero-clearance, plug-and-play assembly.

\\n

Q3: Will internal fluid lines and electrical wiring suffer edge abrasion during frequent chair adjustments?

\\n

No. The wire/fluid routing channels feature generous transition radii (such as R3.3 blends) and undergo strict deburring before coating, effectively eliminating sharp edges and preventing chafing or pinching of utility lines during repeated chair articulation.

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

We specialize in non-standard precision structural components for medical devices. With strict clean production control and mature manufacturing systems, we supply durable bottom load-bearing base components for automatic medical testing and pharmaceutical production lines.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"},{"@id":"https://www.cncliq.com/product/medical-dental-chair-leg-support","@type":"WebPageElement","name":"Medical Dental Chair Leg Support","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Architecture Overview

\\n

The medical dental chair leg support assembly represents a mission-critical structural articulation component engineered specifically for high-end electro-hydraulic and electromechanical dental operative units. Serving as the primary load-bearing interface between the central patient positioning chassis and the lower extremity articulation sub-assembly, this structural casting provides indispensable kinetic guidance, anatomical support, and vibration-damped load distribution throughout dynamic clinical positioning sequences. In contemporary restorative dentistry, oral maxillofacial surgery, implantology, and orthodontics, patient stability and positioning precision directly dictate clinical outcomes. The leg support resolves the multifaceted engineering challenges of torsional rigidity, cyclic fatigue resistance, strict bio-sanitization tolerance, and micro-inch pin mating clearances by utilizing an advanced A356-T6 structural aluminum alloy casting coupled with multi-axis CNC secondary machining and compliant medical-grade electrostatic powder coating.

\\n

2. Material Engineering & Metallurgical Architecture

\\n

The fundamental structural integrity of the leg support originates from its raw material specification—A356-T6 cast aluminum alloy. A356 is a hypoeutectic 7.0% silicon and 0.35% magnesium aluminum alloy specifically selected for its exceptional castability, weldability, pressure tightness, and outstanding strength-to-weight ratio. The alloy undergoes a rigorous T6 thermal treatment schedule consisting of high-temperature solution heat treatment at 538°C (1000°F) for 8 to 12 hours to dissolve solute atoms into solid solution, rapid water quenching at 65°C to 100°C to freeze the supersaturated solid solution, and subsequent artificial aging at 155°C (310°F) for 4 to 6 hours to promote uniform precipitation of fine Mg\\u2082Si intermetallic phases.

\\n

This metallurgical architecture yields a tensile strength ranging from 230 to 260 MPa, a yield strength exceeding 165 to 185 MPa, an elongation at break of 3.5% to 5.0%, and a Brinell hardness between 75 and 85 HBW. With a material density of approximately 2.68 g/cm³, the component reduces the rotational moment of inertia across the dental chair articulation linkages while offering structural rigidity comparable to cast iron sections weighing nearly three times as much. The fine eutectic silicon microstructure modified with strontium additions provides superior fatigue strength, allowing the leg support to endure decades of continuous patient ingress, egress, and dynamic articulation without crack propagation.

\\n

3. Precision Multi-Axis Machining & Dimensional Tolerancing

\\n

Transitioning from raw casting to finished machined component demands high-precision multi-axis CNC milling, drilling, tapping, and reaming operations across multi-plane datums. The component measures approximately 384.71 mm in overall height, 310.39 mm in lateral width, and features wall sections optimized between 12.30 mm and 28.58 mm to withstand heavy cantilevered bending moments. Critical structural features include dual reamed pivot pin through-holes dimensioned at 0.502 inches (+0.001/-0.000 in, or 12.75 ±0.025 mm) engineered to accommodate high-precision global mating pins (Global Part Number: 107037536), secondary 0.625 inch (15.95 +0.025/-0.000 mm) through-holes across both structural feet, and 1/4-20 UNC-2B cross-drilled internal relief holes intersecting primary hinge axes.

\\n

Secondary mounting interfaces incorporate an array of 8 counterbored fastening positions threaded with 10-32 UNF internal threads with 0.209 inch $\\\"\\\\times\\\"$ 90° countersinks and a dedicated R14.27 mm (R0.562 in cast reference) detent retention groove. Manufacturing protocols strictly mandate minimizing manual hand grinding adjacent to the detent profile to preserve exact camming geometry and prevent positional play during active articulation. The comprehensive geometrical dimensioning and tolerancing (GD&T) ensures concentric alignment across all opposing hinge clevises, thereby preventing premature bushing wear and eliminating binding during motorized deployment.

\\n

4. Surface Finishing, Masking Protocols & Quality Assurance

\\n

Prior to surface finishing, all external cast and machined surfaces undergo mechanical Dual Action (DA) orbital sanding and automated deburring to eliminate all micro-burrs, parting lines, and sharp edges. Surface coating is executed in strict compliance with Medical Paint Specification, applying a specialized thermoset epoxy-polyester powder coat system. Because the leg support integrates precision running clearance bores and threaded fasteners, a comprehensive masking protocol is enforced during the electrostatic application process:

\\n

\\n
All threaded apertures (including 1/4-20 UNC and 10-32 UNF) are masked against powder ingress;
\\n
\\n
Precision 0.501 inch and 0.502 inch reamed pin bores are 100% masked on all interior mating surfaces;
\\n
\\n
0.625 inch pivot bores across both feet are masked on all interior faces;
\\n
\\n
Controlled overspray is selectively permitted across designated non-functional interior casting surfaces to optimize coating cycle efficiency without compromising structural fits.
\\n

\\n

The resulting exterior finish provides uniform texture and color free of runs, sags, blistering, or particulate inclusions, delivering a coating thickness of 75 to 110 μm that withstands over 1000 hours of continuous ASTM B117 salt spray exposure and exhibits high chemical resilience against quaternary ammonium, 75% isopropyl alcohol, and sodium hypochlorite hospital-grade disinfectants.

\\n

5. Clinical Ergonomics & Operational Application Scenarios

\\n

In modern clinical practice, dental treatment chairs must accommodate an extraordinarily diverse demographic while providing flawless stability during delicate microscopic procedures:

\\n

\\n
General Restorative Dentistry & Prophylaxis: The leg support maintains synchronized, vibration-free angular adjustment during routine chair elevation, Trendelenburg tilting, and return-to-exit movements. It provides rigid knee and lower-calf stabilization that alleviates lumbar spinal tension in seated patients, facilitating ergonomic positioning for dentists and hygienists during extended treatment sessions.
\\n
\\n
Oral & Maxillofacial Surgery and Dental Implantology: During prolonged surgical interventions exceeding 120 to 180 minutes, any mechanical deflection or microscopic backlash under patient weight creates visual disruption under high-magnification surgical loupes and operating microscopes. The component provides a rock-solid structural foundation with zero discernible flexure under concentrated lower-body loads.
\\n
\\n
Pediatric, Bariatric & Geriatric Patient Care: Engineered with a conservative structural safety factor exceeding 4.0, the leg support effortlessly accommodates bariatric patient capacities up to 250 kg (550 lbs) dynamic load and over 800 kg static load without plastic deformation, while its smooth contour profile prevents soft-tissue pinching during automated leg-rest retraction.
\\n

\\n

6. Engineering Advantages & Comparative Value Matrix

\\n

The 113-015-025-H leg support establishes a benchmark in dental structural engineering through five distinct architectural pillars:

\\n

\\n
High Specific Rigidity & Vibration Damping: The A356-T6 alloy matrix attenuates high-frequency harmonics generated by hydraulic actuators and electric spindle motors, eliminating tactile vibration transfer to the patient.
\\n
\\n
Micro-Inch Kinematic Precision: Tight bilateral reamed tolerances (+0.001/-0.000 in / ±0.025 mm) eliminate mechanical hysteresis and wobbling throughout 100,000+ articulation cycles, guaranteeing smooth, silent motion.
\\n
\\n
Full Surface Passivation & Infection Control: Chemical-resistant powder coating prevents oxidative pitting and galvanic corrosion even under intensive daily wiping protocols mandated by ISO 13485 medical cleaning standards.
\\n
\\n
Reduced Actuator Load: The optimized topological casting geometry lowers total assembly weight by 42% compared to traditional ductile iron or welded steel brackets, extending the operational lifespan of chair lifting motors and hydraulic seals.
\\n
\\n
Total Life-Cycle Economy: By eliminating field fatigue fractures, bushing misalignment, and surface degradation, the component dramatically lowers the Total Cost of Ownership (TCO) for dental equipment OEMs and clinical end-users.
\\n

\\n

FAQ

\\n

Q1: Why is A356-T6 cast aluminum used instead of traditional cast iron or welded steel?

\\n

With a density of 2.68 g/cm³, A356-T6 reduces component weight by over 60% compared to cast iron, lowering actuator load while providing 230–260 MPa tensile strength, superior vibration damping, and intrinsic corrosion resistance.

\\n

Q2: Why is 100% masking strictly required for pin bores (0.502/0.625\\\") and threaded holes prior to painting?

\\n

The critical hinge bores have a tight tolerance of 0.502 +0.001/-0.000\\\" (12.75 ±0.025 mm) to match mating pins (Global P/N: 107037536). Powder coating buildup (75–110 μm) inside bores or threads would ruin running clearances, causing mechanical binding or cross-threading.

\\n

Q3: Why does the blueprint explicitly mandate \\\"Minimize hand grinding near detent groove\\\"?

\\n

The R14.27 mm detent groove acts as a precision camming profile for positioning and retention. Over-grinding distorts its exact geometry, leading to positional play, backlash, or loss of positive locking feel during articulation.

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"},{"@id":"https://www.cncliq.com/product/dental-chair-backrest","@type":"WebPageElement","name":"Dental Chair Backrest","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Product Identification and Architectural Role

\\n

The dental chair backrest assembly represents a foundational, mission-critical structural component designed specifically for modern dental operatory workstations and specialized surgical patient positioning platforms. Acting as the central structural spine of the dental treatment unit, this component provides continuous ergonomic upper-body stabilization for patients while seamlessly bridging the mechanical articulation between the motorized elevation chassis and the adjustable cervical headrest. The entire framework is engineered to withstand substantial multi-directional static and dynamic forces encountered during routine dental examinations, delicate microsurgical operations, and emergency patient positioning procedures.

\\n

By integrating an anatomically contoured shell profile with extensive internal reinforcement web networks, this backrest structure achieves exceptional torsional stiffness and flexural resistance without adding unnecessary mass to the chair's motorized tilt mechanism. Its contoured geometry supports proper spinal alignment, facilitating unobstructed practitioner access to the oral cavity from multiple ergonomic working angles, whether the patient is placed in an upright diagnostic posture or a fully reclined supine configuration.

\\n

                     +---------------------------------------+\\n                     |    1. Primary Ingot & Alloy Smelt     |\\n                     |       (Medical-Grade Cast Alloy)      |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    2. Permanent Mold Gravity Casting  |\\n                     |     (Integrally Cast Ribs & Bosses)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    3. T6 Solution & Aging Treatment   |\\n                     |     (High Yield & Fatigue Strength)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    4. Multi-Axis Precision CNC Machining\\n                     |       - Pivot Ears In-line Bores      |\\n                     |       - Multi-Thread Drilling/Tapping |\\n                     |       - Routing Cutouts & Spotfaces   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    5. Dual-Action (DA) Orbital Sanding|\\n                     |     (Deburring, Edge Radiusing R0.5)  |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    6. Masking & Snow White Coating    |\\n                     |     (Medical Spec & Color Standard)   |\\n                     +---------------------------------------+\\n

\\n

2. Material Science and Structural Metallurgy

\\n

The structural core is produced from a high-integrity, medical-grade cast aluminum alloy subjected to complete solution heat treatment and artificial precipitation hardening (T6 temper). This metallurgical conditioning optimizes the internal grain matrix, imparting outstanding yield strength, dynamic fatigue endurance, and long-term creep resistance under cyclical patient loading.

\\n

Compared to traditional cast iron or fabricated steel weldments, this advanced cast aluminum alloy delivers substantial lightweight advantages, reducing overall deadweight and lowering the operating inertia on the chair's motorized lift drives and hydraulic cylinders. The natural passivation properties of the alloy matrix ensure inherent resistance to atmospheric oxidation and moisture exposure. The engineered combination of structural toughness and localized ductility prevents brittle fracture and fatigue micro-cracking, guaranteeing structural reliability over decades of rigorous clinic service.

\\n

3. Comprehensive Manufacturing Lifecycle and Processing Flow

\\n

The production methodology follows a rigorous, multi-stage medical manufacturing protocol designed to ensure dimensional repeatability, geometric precision, and aesthetic presentation:

\\n

Phase A: Permanent Mold Precision Casting

\\n

The manufacturing cycle begins with precision permanent mold gravity casting. Molten aluminum alloy is introduced into temperature-regulated tool steel dies to form the unified outer contoured shell, internal stiffening ribs, perimeter fastening bosses, and lower mechanical articulation hinge ears in a single homogeneous casting. The internal rib structure is intentionally designed with gradual transitional radii and directional draft angles to prevent shrinkage porosity, hot tearing, and residual thermal stresses.

\\n

Phase B: Advanced Multi-Axis CNC Precision Machining

\\n

Following thermal treatment, the raw casting undergoes multi-axis CNC milling, precision boring, and automated tapping operations:

\\n

\\n
Coaxial Articulation Pivot Bores: The heavy-duty lower hinge ears are bored in a single coordinated machining setup using dedicated line-boring tooling. This process achieves true coaxial alignment from side to side, ensuring smooth, friction-free rotational coupling with the primary drive pins and eliminating mechanical binding during backrest recline.
\\n
\\n
Specialized Fastener Matrix: High-speed milling spindles generate multiple groups of fine and coarse internal threads, counterbored clearance holes, and precision spotfaces across the casting. These threaded groupings accommodate structural tie-bars, motor drive brackets, side armrest mounts, sensory feedback modules, and internal ground wire terminals.
\\n
\\n
Internal Passages and Lateral Cutouts: Symmetrical conduit pass-through openings and lateral edge reliefs are machined through the sidewalls to facilitate smooth, concealed routing of vacuum suction lines, water conduits, fiber-optic illuminator cabling, and electronic communication buses.
\\n
\\n
Cushion Mounting Interfaces: Perimeter mounting pads are face-milled to establish uniform seating lands for the quick-mount attachment of ergonomic upholstery and lumbar support components.
\\n

\\n

Phase C: Dual-Action (DA) Mechanical Surface Conditioning

\\n

Before coating, all exterior surfaces undergo extensive Dual-Action (DA) orbital mechanical sanding. Skilled technicians methodically blend casting parting lines, smooth out raw surface textures, and break all transitional corners. This deburring and radiusing step eliminates sharp edges and microscopic surface notches that could act as stress concentrators or compromise coating adhesion.

\\n

Phase D: Precision Masking and Surface Decontamination

\\n

To maintain strict functional tolerances, an intricate masking protocol is deployed. High-temperature silicone plugs and custom-cut protective masking tapes are fitted into all internal threaded holes, pivot ear bores, lateral cable pass-through openings, and ground contact pads. The entire part is then degreased, chemically cleaned, and pre-conditioned through a multi-stage wash sequence to guarantee maximum chemical bonding for the subsequent coating layer.

\\n

Phase E: Medical-Grade Protective Coating Application

\\n

The finishing stage involves the application of a high-durability, medical-grade liquid enamel or electrostatic powder coating in a signature clinical snow-white tone. Outer visible and operational surfaces receive full, uniform coverage that cures into a continuous, resilient barrier. The cured coating exhibits a micro-textured visual finish, free of runs, sags, pinholes, blisters, or embedded foreign matter, while recessed non-functional interior pockets are treated with controlled overspray to maximize manufacturing efficiency.

\\n

4. Quality Assurance, Regulatory Compliance, and Metrology

\\n

Quality control protocols are tightly woven into every stage of the manufacturing sequence:

\\n

\\n
Coordinate Measuring Metrology (CMM): First-article castings and production lots are validated on advanced Coordinate Measuring Machines to verify multi-axis datums, pivot bore true-position alignment, boss coplanarity, and thread location accuracy.
\\n
\\n
Thread Engagement Inspection: All internal tapped holes are verified with calibrated thread plug gauges after coating removal to ensure effortless assembly and thread integrity without paint contamination.
\\n
\\n
Coating Adhesion and Chemical Durability: Coated surfaces undergo cross-hatch tape adhesion testing and chemical wipe testing. The resilient snow-white coating demonstrates resistance to hospital-grade disinfectants, medical rubbing alcohols, quaternary ammonium wipes, and sodium hypochlorite sanitizing agents, retaining its color fidelity, gloss level, and surface integrity without softening, yellowing, or peeling.
\\n

\\n

5. Medical Operatory Applications and Operational Value

\\n

The backrest assembly is deployed as a core structural element in premium dental operatory treatment centers, pediatric examination units, and specialized oral maxillofacial surgical suites:

\\n

\\n
Kinematic Smoothness and Recline Stability: The precision-bored dual hinge ears integrate smoothly with hydraulic tilt cylinders and synchronized dual-spindle linear actuators, delivering gentle, silent angular recline motions from upright patient consultation to full supine surgical positioning.
\\n
\\n
Concealed Utility Distribution: Integrated lateral access ports and deep internal casting channels protect delicate pneumatic tubing, clean water delivery lines, and high-frequency digital sensor wiring, shielding them from mechanical abrasion or accidental pinching.
\\n
\\n
Aseptic Maintenance and Ergonomics: The continuous, non-porous exterior coating allows clinical staff to perform rapid, effective disinfection between patient appointments. Its sleek, radiused contours prevent dirt accumulation, enhancing clinic hygiene while providing dentists and dental assistants with comfortable, close-proximity patient access during delicate restorative procedures.
\\n

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"}],"isPartOf":{"@id":"https://www.cncliq.com/#website","@type":"WebSite","name":"NingboLiqin","url":"https://www.cncliq.com"},"potentialAction":{"@type":"SearchAction","target":"https://www.cncliq.com/en/search?search={search_term_string}","query-input":"required name=search_term_string"},"hasPart":[{"@id":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate","@type":"WebPageElement","name":"Medical-Grade Dental Chair Structural Articulation & Base Plate","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Positioning

\\n

2. Premium Engineering Materials & Metallurgical Properties

\\n

2.1 A356-T6 / A365-T6 Cast Aluminum Alloy Matrix

\\n

\\n
Alloy Purity & Casting Integrity: The aluminum-silicon-magnesium composition provides dense, defect-free metal consolidation during the casting process, preventing common microstructural flaws such as internal shrinkage cavities, gas inclusions, and porosity.
\\n
\\n
T6 Heat Treatment Regimen: Following the casting operation, the component undergoes a complete solution heat treatment followed by precision artificial aging (T6 temper). This metallurgical transformation homogenizes the solid solution and forms densely distributed precipitate hardening phases throughout the crystalline lattice, maximizing yield strength, tensile toughness, and fatigue resistance under high cyclic dynamic loading.
\\n

\\n

2.2 Structural Topology Optimization & Rib Reinforcement

\\n

Unlike standard flat plates that suffer from flexural distortion under offset patient loads, this chair plate incorporates an advanced reverse-side radial stiffener matrix:

\\n

\\n
Radial Load Dispersion Ribs: A web of structural reinforcement ribs radiates outward from the central load-bearing hub to the peripheral mounting ears. This architectural layout channels multidirectional bending and torsional moments away from the center, effectively distributing mechanical stress throughout the entire perimeter.
\\n
\\n
Targeted Material Distribution: High-stress zones feature reinforced localized wall thickness, while non-load-bearing regions are sculpted to minimize unnecessary weight. This optimization ensures a minimum nominal wall thickness across thin-gauge sections without sacrificing structural stiffness, keeping the overall assembly lightweight and easy to manipulate during factory integration.
\\n

\\n

3. Precision Manufacturing & Advanced Processing Workflow

\\n

The manufacturing lifecycle of the dental chair plate reflects a tightly controlled sequence of metallurgical, mechanical, and surface engineering processes:

\\n

3.1 Casting, Forming & Thermal Stress Relief

\\n

\\n
The initial rough casting is formed in precision permanent molds to achieve consistent dimensional profiles and smooth raw surface contours.
\\n
\\n
Post-casting thermal annealing and structural straightening eliminate residual internal stresses accumulated during solidification, preventing post-machining warping or dimensional relaxation over years of active clinic operation.
\\n

\\n

3.2 Multi-Axis CNC Precision Machining

\\n

Following casting qualification, the component transitions to state-of-the-art multi-axis CNC machining centers for single-setup geometric refinement:

\\n

\\n
Central Pivot Bore & Bearing Race: The large circular central aperture and its concentric locating counterbore are high-speed turned and milled to exacting tolerances, providing seamless seating for central rotary bearings, slew rings, and pivotal articulation shafts.
\\n
\\n
Machined Pad Coplanarity & Flatness: All peripheral and central mounting pads are machined in coordinated reference passes. Total flatness across all functional contact pads is inspected against tight geometric tolerance bands, eliminating assembly bind, uneven bolt preload, and rocking when bolted to the patient chair frame.
\\n
\\n
Complex Threaded Hole Arrays: The plate features a series of multi-standard fastener points tailored for diverse interface requirements:
\\n
- \\n
  Six radial mounting positions arranged in an equidistant 60-degree circular bolt pattern with 1/4-20 UNC-2B internal threads for secure anchoring to the primary chassis.
  \\n
- \\n
  Secondary mounting points with 10-32 UNF-2B tapped holes (including through-hole and controlled-depth blind configurations designed with specific clearances to ensure no breakthrough on aesthetic exterior faces).
  \\n
- \\n
  Micro-fastener points featuring M3 metric threads for mounting internal sensor brackets and position limit switches.
  \\n
\\n

\\n

3.3 Cable Routing & Pass-Through Windows

\\n

Modern dental chairs route extensive arrays of pneumatic supply lines, high-pressure water feeds, surgical suction tubes, and digital sensor buses through the articulation core:

\\n

\\n
The plate integrates dedicated wiring clearance channels and smooth pass-through apertures.
\\n
\\n
All routing edges and slot transitions undergo dedicated automated and manual deburring, resulting in continuous rounded radii (such as R3.3 blends) that completely eliminate burrs and sharp edges, preventing abrasion or pinching of flexible utility lines during chair elevation and recline cycles.
\\n

\\n

3.4 Medical-Grade \\\"Gray Granite\\\" Powder Coating & Selective Masking

\\n

The exterior surface of the plate is protected by an industrial-grade architectural powder coat finish:

\\n

\\n
Surface Preparation: The unmasked cast exterior undergoes thorough solvent degreasing and surface conditioning to ensure maximum chemical and physical bonding of the polymer coating.
\\n
\\n
Specialized Color & Texture Formulation: The coating is formulated in an elegant \\\"Gray Granite\\\" textured finish (PTUS37AS19 by Powder Technology, Inc.). This micro-textured finish provides high tactile quality, eliminates specular glare under dental operating lights, and hides superficial scratches.
\\n
\\n
Precision Film Thickness: The coating application is maintained within a strict 1 to 3 mil thickness envelope, achieving complete, uniform coverage while preventing excessive buildup that could lead to edge chipping or flaking.
\\n
\\n
Comprehensive Thread & Interface Masking: Before entering the electrostatic spray booth, all functional tapped holes (1/4-20, 10-32, M3), central bearing fits, and critical datum surfaces are sealed with custom thermal masking plugs and tapes. This guarantees that all machined interfaces remain free of paint overspray, maintaining zero-clearance mechanical fits during assembly.
\\n

\\n

4. Application Scenarios & System-Level Integration

\\n

The chair plate is purpose-built for diverse clinical environments where structural dependability and hygienic integrity are paramount:

\\n

\\n
Next-Generation Dental Treatment Consoles:
\\n
- \\n
  Functions as the core horizontal support interface between the bottom scissor-lift elevation column and the motorized backrest/seat articulation sub-frame.
  \\n
\\n
\\n
Specialized Oral & Maxillofacial Surgical Chairs:
\\n
- \\n
  Delivers absolute structural rigidity during intricate microsurgery, dental implant placements, and prolonged endodontic treatments where any mechanical wobble, vibration, or drift would compromise surgical precision.
  \\n
\\n
\\n
High-Throughput Clinical Environments:
\\n
- \\n
  Built to endure the demanding operational tempo of hospital dental wards and high-volume outpatient clinics, handling continuous adjustments for hundreds of patients daily without structural fatigue or joint loosening.
  \\n
\\n
\\n
Intense Disinfection & Sanitization Regimes:
\\n
- \\n
  Resists routine wipe-downs with harsh quaternary ammonium compounds, alcohol-based solutions, and chlorine-based surface disinfectants without discoloration, bubbling, or degradation of the protective finish.
  \\n
\\n

\\n

5. Quality Inspection Protocols & Metrology

\\n

To ensure zero-defect delivery for critical medical equipment, each production batch adheres to an exhaustive Quality Assurance (QA) and In-Process Quality Control (IPQC) framework:

\\n

\\n
First Article & In-Process Inspection: Dimensional verification is executed at regular production intervals using calibrated vernier height gages, digital calipers, depth micrometers, and thread go/no-go plug gages.
\\n
\\n
Comprehensive Go/No-Go Fixturing: Complex hole-pattern relationships, locating dowel positions, and slot geometries are cross-checked using dedicated hard inspection tooling to guarantee 100% plug-and-play assembly line compatibility.
\\n
\\n
Visual & Surface Quality Control: Coated surfaces are inspected under standardized diffuse lighting to verify color uniformity, texture consistency, and the complete absence of runs, sags, pinholes, or particulate contamination.
\\n

\\n

6. Key Product Advantages & Engineering Highlights

\\n

\\n
Optimized Rigidity-to-Weight Performance: The A356-T6 aluminum construction backed by radial ribbing provides the structural stiffness of heavy cast iron at a fraction of the weight, reducing the mechanical burden and energy draw on chair elevation motors.
\\n
\\n
Zero-Backlash Mechanical Alignment: Precision CNC-machined reference surfaces and balanced fastener layouts prevent mechanical play and squeaking, ensuring smooth, silent recline and elevation motions that maximize patient comfort.
\\n
\\n
Superior Environmental & Chemical Resilience: The specialized Gray Granite powder coating offers outstanding barrier protection against moisture, physiological fluids, and hospital-grade sanitizers, preventing galvanic corrosion and surface oxidation.
\\n
\\n
Ergonomic Safety & Cable Longevity: Fully deburred cable channels with generous transition radii eliminate the risk of severed signal lines or fluid leaks, protecting both the machine’s internal systems and clinical technicians during routine maintenance.
\\n

\\n

7. Commercial Value & OEM Benefits

\\n

Partnering with a proven manufacturing process for this critical dental chair plate delivers substantial strategic value to dental equipment OEMs:

\\n

\\n
Accelerated Assembly Line Throughput: High dimensional repeatability and pristine, pre-masked threaded connections eliminate on-site re-tapping, shimming, or fitting modifications, drastically cutting assembly cycle times.
\\n
\\n
Drastic Reduction in Warranty Claims: The high fatigue resistance of heat-treated aluminum and durable powder finish minimize service calls related to structural sagging, fastener stripping, or cosmetic wear over a decade-long product service life.
\\n
\\n
Enhanced Brand Prestige: The refined granite-texture aesthetic and ultra-smooth mechanical performance reinforce the dental brand's reputation for premium quality, safety, and modern ergonomic design in global healthcare markets.
\\n
\\n
Full Medical Regulatory Compliance: Standardized process inspection records, material traceability, and non-toxic, RoHS-compliant surface finishes simplify customer submissions for international medical device certifications, including CE, FDA, and ISO 13485 audits.
\\n

\\n

FAQ

\\n

Q1: Will the coating peel or corrode with frequent use of medical disinfectants?

\\n

Q2: Do threaded holes and mating surfaces require secondary cleaning or re-tapping during OEM assembly?

\\n

Q3: Will internal fluid lines and electrical wiring suffer edge abrasion during frequent chair adjustments?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Architecture Overview

\\n

2. Material Engineering & Metallurgical Architecture

\\n

3. Precision Multi-Axis Machining & Dimensional Tolerancing

\\n

4. Surface Finishing, Masking Protocols & Quality Assurance

\\n

\\n
All threaded apertures (including 1/4-20 UNC and 10-32 UNF) are masked against powder ingress;
\\n
\\n
Precision 0.501 inch and 0.502 inch reamed pin bores are 100% masked on all interior mating surfaces;
\\n
\\n
0.625 inch pivot bores across both feet are masked on all interior faces;
\\n
\\n
Controlled overspray is selectively permitted across designated non-functional interior casting surfaces to optimize coating cycle efficiency without compromising structural fits.
\\n

\\n

5. Clinical Ergonomics & Operational Application Scenarios

\\n

In modern clinical practice, dental treatment chairs must accommodate an extraordinarily diverse demographic while providing flawless stability during delicate microscopic procedures:

\\n

\\n
General Restorative Dentistry & Prophylaxis: The leg support maintains synchronized, vibration-free angular adjustment during routine chair elevation, Trendelenburg tilting, and return-to-exit movements. It provides rigid knee and lower-calf stabilization that alleviates lumbar spinal tension in seated patients, facilitating ergonomic positioning for dentists and hygienists during extended treatment sessions.
\\n
\\n
Oral & Maxillofacial Surgery and Dental Implantology: During prolonged surgical interventions exceeding 120 to 180 minutes, any mechanical deflection or microscopic backlash under patient weight creates visual disruption under high-magnification surgical loupes and operating microscopes. The component provides a rock-solid structural foundation with zero discernible flexure under concentrated lower-body loads.
\\n
\\n
Pediatric, Bariatric & Geriatric Patient Care: Engineered with a conservative structural safety factor exceeding 4.0, the leg support effortlessly accommodates bariatric patient capacities up to 250 kg (550 lbs) dynamic load and over 800 kg static load without plastic deformation, while its smooth contour profile prevents soft-tissue pinching during automated leg-rest retraction.
\\n

\\n

6. Engineering Advantages & Comparative Value Matrix

\\n

The 113-015-025-H leg support establishes a benchmark in dental structural engineering through five distinct architectural pillars:

\\n

\\n
High Specific Rigidity & Vibration Damping: The A356-T6 alloy matrix attenuates high-frequency harmonics generated by hydraulic actuators and electric spindle motors, eliminating tactile vibration transfer to the patient.
\\n
\\n
Micro-Inch Kinematic Precision: Tight bilateral reamed tolerances (+0.001/-0.000 in / ±0.025 mm) eliminate mechanical hysteresis and wobbling throughout 100,000+ articulation cycles, guaranteeing smooth, silent motion.
\\n
\\n
Full Surface Passivation & Infection Control: Chemical-resistant powder coating prevents oxidative pitting and galvanic corrosion even under intensive daily wiping protocols mandated by ISO 13485 medical cleaning standards.
\\n
\\n
Reduced Actuator Load: The optimized topological casting geometry lowers total assembly weight by 42% compared to traditional ductile iron or welded steel brackets, extending the operational lifespan of chair lifting motors and hydraulic seals.
\\n
\\n
Total Life-Cycle Economy: By eliminating field fatigue fractures, bushing misalignment, and surface degradation, the component dramatically lowers the Total Cost of Ownership (TCO) for dental equipment OEMs and clinical end-users.
\\n

\\n

FAQ

\\n

Q1: Why is A356-T6 cast aluminum used instead of traditional cast iron or welded steel?

\\n

Q2: Why is 100% masking strictly required for pin bores (0.502/0.625\\\") and threaded holes prior to painting?

\\n

Q3: Why does the blueprint explicitly mandate \\\"Minimize hand grinding near detent groove\\\"?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Product Identification and Architectural Role

\\n

                     +---------------------------------------+\\n                     |    1. Primary Ingot & Alloy Smelt     |\\n                     |       (Medical-Grade Cast Alloy)      |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    2. Permanent Mold Gravity Casting  |\\n                     |     (Integrally Cast Ribs & Bosses)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    3. T6 Solution & Aging Treatment   |\\n                     |     (High Yield & Fatigue Strength)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    4. Multi-Axis Precision CNC Machining\\n                     |       - Pivot Ears In-line Bores      |\\n                     |       - Multi-Thread Drilling/Tapping |\\n                     |       - Routing Cutouts & Spotfaces   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    5. Dual-Action (DA) Orbital Sanding|\\n                     |     (Deburring, Edge Radiusing R0.5)  |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    6. Masking & Snow White Coating    |\\n                     |     (Medical Spec & Color Standard)   |\\n                     +---------------------------------------+\\n

\\n

2. Material Science and Structural Metallurgy

\\n

3. Comprehensive Manufacturing Lifecycle and Processing Flow

\\n

The production methodology follows a rigorous, multi-stage medical manufacturing protocol designed to ensure dimensional repeatability, geometric precision, and aesthetic presentation:

\\n

Phase A: Permanent Mold Precision Casting

\\n

Phase B: Advanced Multi-Axis CNC Precision Machining

\\n

Following thermal treatment, the raw casting undergoes multi-axis CNC milling, precision boring, and automated tapping operations:

\\n

\\n
Coaxial Articulation Pivot Bores: The heavy-duty lower hinge ears are bored in a single coordinated machining setup using dedicated line-boring tooling. This process achieves true coaxial alignment from side to side, ensuring smooth, friction-free rotational coupling with the primary drive pins and eliminating mechanical binding during backrest recline.
\\n
\\n
Specialized Fastener Matrix: High-speed milling spindles generate multiple groups of fine and coarse internal threads, counterbored clearance holes, and precision spotfaces across the casting. These threaded groupings accommodate structural tie-bars, motor drive brackets, side armrest mounts, sensory feedback modules, and internal ground wire terminals.
\\n
\\n
Internal Passages and Lateral Cutouts: Symmetrical conduit pass-through openings and lateral edge reliefs are machined through the sidewalls to facilitate smooth, concealed routing of vacuum suction lines, water conduits, fiber-optic illuminator cabling, and electronic communication buses.
\\n
\\n
Cushion Mounting Interfaces: Perimeter mounting pads are face-milled to establish uniform seating lands for the quick-mount attachment of ergonomic upholstery and lumbar support components.
\\n

\\n

Phase C: Dual-Action (DA) Mechanical Surface Conditioning

\\n

Phase D: Precision Masking and Surface Decontamination

\\n

Phase E: Medical-Grade Protective Coating Application

\\n

4. Quality Assurance, Regulatory Compliance, and Metrology

\\n

Quality control protocols are tightly woven into every stage of the manufacturing sequence:

\\n

\\n
Coordinate Measuring Metrology (CMM): First-article castings and production lots are validated on advanced Coordinate Measuring Machines to verify multi-axis datums, pivot bore true-position alignment, boss coplanarity, and thread location accuracy.
\\n
\\n
Thread Engagement Inspection: All internal tapped holes are verified with calibrated thread plug gauges after coating removal to ensure effortless assembly and thread integrity without paint contamination.
\\n
\\n
Coating Adhesion and Chemical Durability: Coated surfaces undergo cross-hatch tape adhesion testing and chemical wipe testing. The resilient snow-white coating demonstrates resistance to hospital-grade disinfectants, medical rubbing alcohols, quaternary ammonium wipes, and sodium hypochlorite sanitizing agents, retaining its color fidelity, gloss level, and surface integrity without softening, yellowing, or peeling.
\\n

\\n

5. Medical Operatory Applications and Operational Value

\\n

The backrest assembly is deployed as a core structural element in premium dental operatory treatment centers, pediatric examination units, and specialized oral maxillofacial surgical suites:

\\n

\\n
Kinematic Smoothness and Recline Stability: The precision-bored dual hinge ears integrate smoothly with hydraulic tilt cylinders and synchronized dual-spindle linear actuators, delivering gentle, silent angular recline motions from upright patient consultation to full supine surgical positioning.
\\n
\\n
Concealed Utility Distribution: Integrated lateral access ports and deep internal casting channels protect delicate pneumatic tubing, clean water delivery lines, and high-frequency digital sensor wiring, shielding them from mechanical abrasion or accidental pinching.
\\n
\\n
Aseptic Maintenance and Ergonomics: The continuous, non-porous exterior coating allows clinical staff to perform rapid, effective disinfection between patient appointments. Its sleek, radiused contours prevent dirt accumulation, enhancing clinic hygiene while providing dentists and dental assistants with comfortable, close-proximity patient access during delicate restorative procedures.
\\n

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"}],"primaryImageOfPage":{"@type":"ImageObject","url":"https://www.cncliq.com/image/img/logo.png"}},{"@context":"https://schema.org","@type":"SoftwareApplication","@id":"https://www.cncliq.com/en/products#software","name":"NingboLiqin","description":"Browse products and filter by category.","applicationCategory":"BusinessApplication","operatingSystem":"Web","url":"https://www.cncliq.com/en/products","image":"https://www.cncliq.com/image/img/logo.png","brand":{"@type":"Brand","name":"NingboLiqin"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"4.9","reviewCount":"128","bestRating":"5","worstRating":"1"},"review":[{"@type":"Review","author":{"@type":"Organization","name":"Power Grid Technology Co., Ltd"},"reviewBody":"Liqin Manufacturing delivered custom CNC machined aluminum and stainless steel components with consistent tolerances, smooth surface finishes, and clear communication from quote to delivery. Their precision metal manufacturing support helped our engineering team shorten prototyping time and move confidently into small-batch production.","datePublished":"2025-01-06","name":"Reliable CNC Machining Partner for Precision Metal Parts","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}},{"@type":"Review","author":{"@type":"Organization","name":"Smart Terminal Technology Manufacturer"},"reviewBody":"We needed durable non-standard metal parts for smart terminal equipment, and Liqin provided practical DFM feedback, stable CNC machining quality, and dependable inspection reports. The finished components fit our assembly requirements well and supported a smoother product launch.","datePublished":"2025-01-18","name":"High-Quality Custom Metal Components for Smart Devices","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}},{"@type":"Review","author":{"@type":"Organization","name":"Industrial Robot Equipment Factory"},"reviewBody":"For our industrial robot equipment, Liqin produced precision turned parts and machined metal components with excellent repeatability across batches. Their experience with copper, aluminum, and stainless steel manufacturing made them a valuable supplier for automation hardware.","datePublished":"2025-02-07","name":"Precision Parts Supplier for Industrial Automation Projects","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}},{"@type":"Review","author":{"@type":"Organization","name":"Low-temperature Cold Storage Equipment Company"},"reviewBody":"Liqin helped us source custom metal parts for low-temperature cold storage systems where strength, corrosion resistance, and dimensional accuracy were critical. Their quality control process and responsive project communication gave us confidence in long-term cooperation.","datePublished":"2025-02-14","name":"Consistent Metal Processing Quality for Cold Storage Equipment","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}},{"@type":"Review","author":{"@type":"Organization","name":"Telecommunication Equipment Group"},"reviewBody":"Our telecommunication equipment project required precision metal fabrication, CNC machining, and reliable surface treatment support. Liqin Manufacturing provided stable quality, fast quotation responses, and well-packaged parts that met our international procurement standards.","datePublished":"2025-03-02","name":"Trusted Manufacturing Support for Telecommunication Equipment","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}}],"hasPart":[{"@id":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate","@type":"WebPageElement","name":"Medical-Grade Dental Chair Structural Articulation & Base Plate","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Positioning

\\n

2. Premium Engineering Materials & Metallurgical Properties

\\n

2.1 A356-T6 / A365-T6 Cast Aluminum Alloy Matrix

\\n

\\n
Alloy Purity & Casting Integrity: The aluminum-silicon-magnesium composition provides dense, defect-free metal consolidation during the casting process, preventing common microstructural flaws such as internal shrinkage cavities, gas inclusions, and porosity.
\\n
\\n
T6 Heat Treatment Regimen: Following the casting operation, the component undergoes a complete solution heat treatment followed by precision artificial aging (T6 temper). This metallurgical transformation homogenizes the solid solution and forms densely distributed precipitate hardening phases throughout the crystalline lattice, maximizing yield strength, tensile toughness, and fatigue resistance under high cyclic dynamic loading.
\\n

\\n

2.2 Structural Topology Optimization & Rib Reinforcement

\\n

Unlike standard flat plates that suffer from flexural distortion under offset patient loads, this chair plate incorporates an advanced reverse-side radial stiffener matrix:

\\n

\\n
Radial Load Dispersion Ribs: A web of structural reinforcement ribs radiates outward from the central load-bearing hub to the peripheral mounting ears. This architectural layout channels multidirectional bending and torsional moments away from the center, effectively distributing mechanical stress throughout the entire perimeter.
\\n
\\n
Targeted Material Distribution: High-stress zones feature reinforced localized wall thickness, while non-load-bearing regions are sculpted to minimize unnecessary weight. This optimization ensures a minimum nominal wall thickness across thin-gauge sections without sacrificing structural stiffness, keeping the overall assembly lightweight and easy to manipulate during factory integration.
\\n

\\n

3. Precision Manufacturing & Advanced Processing Workflow

\\n

The manufacturing lifecycle of the dental chair plate reflects a tightly controlled sequence of metallurgical, mechanical, and surface engineering processes:

\\n

3.1 Casting, Forming & Thermal Stress Relief

\\n

\\n
The initial rough casting is formed in precision permanent molds to achieve consistent dimensional profiles and smooth raw surface contours.
\\n
\\n
Post-casting thermal annealing and structural straightening eliminate residual internal stresses accumulated during solidification, preventing post-machining warping or dimensional relaxation over years of active clinic operation.
\\n

\\n

3.2 Multi-Axis CNC Precision Machining

\\n

Following casting qualification, the component transitions to state-of-the-art multi-axis CNC machining centers for single-setup geometric refinement:

\\n

\\n
Central Pivot Bore & Bearing Race: The large circular central aperture and its concentric locating counterbore are high-speed turned and milled to exacting tolerances, providing seamless seating for central rotary bearings, slew rings, and pivotal articulation shafts.
\\n
\\n
Machined Pad Coplanarity & Flatness: All peripheral and central mounting pads are machined in coordinated reference passes. Total flatness across all functional contact pads is inspected against tight geometric tolerance bands, eliminating assembly bind, uneven bolt preload, and rocking when bolted to the patient chair frame.
\\n
\\n
Complex Threaded Hole Arrays: The plate features a series of multi-standard fastener points tailored for diverse interface requirements:
\\n
- \\n
  Six radial mounting positions arranged in an equidistant 60-degree circular bolt pattern with 1/4-20 UNC-2B internal threads for secure anchoring to the primary chassis.
  \\n
- \\n
  Secondary mounting points with 10-32 UNF-2B tapped holes (including through-hole and controlled-depth blind configurations designed with specific clearances to ensure no breakthrough on aesthetic exterior faces).
  \\n
- \\n
  Micro-fastener points featuring M3 metric threads for mounting internal sensor brackets and position limit switches.
  \\n
\\n

\\n

3.3 Cable Routing & Pass-Through Windows

\\n

Modern dental chairs route extensive arrays of pneumatic supply lines, high-pressure water feeds, surgical suction tubes, and digital sensor buses through the articulation core:

\\n

\\n
The plate integrates dedicated wiring clearance channels and smooth pass-through apertures.
\\n
\\n
All routing edges and slot transitions undergo dedicated automated and manual deburring, resulting in continuous rounded radii (such as R3.3 blends) that completely eliminate burrs and sharp edges, preventing abrasion or pinching of flexible utility lines during chair elevation and recline cycles.
\\n

\\n

3.4 Medical-Grade \\\"Gray Granite\\\" Powder Coating & Selective Masking

\\n

The exterior surface of the plate is protected by an industrial-grade architectural powder coat finish:

\\n

\\n
Surface Preparation: The unmasked cast exterior undergoes thorough solvent degreasing and surface conditioning to ensure maximum chemical and physical bonding of the polymer coating.
\\n
\\n
Specialized Color & Texture Formulation: The coating is formulated in an elegant \\\"Gray Granite\\\" textured finish (PTUS37AS19 by Powder Technology, Inc.). This micro-textured finish provides high tactile quality, eliminates specular glare under dental operating lights, and hides superficial scratches.
\\n
\\n
Precision Film Thickness: The coating application is maintained within a strict 1 to 3 mil thickness envelope, achieving complete, uniform coverage while preventing excessive buildup that could lead to edge chipping or flaking.
\\n
\\n
Comprehensive Thread & Interface Masking: Before entering the electrostatic spray booth, all functional tapped holes (1/4-20, 10-32, M3), central bearing fits, and critical datum surfaces are sealed with custom thermal masking plugs and tapes. This guarantees that all machined interfaces remain free of paint overspray, maintaining zero-clearance mechanical fits during assembly.
\\n

\\n

4. Application Scenarios & System-Level Integration

\\n

The chair plate is purpose-built for diverse clinical environments where structural dependability and hygienic integrity are paramount:

\\n

\\n
Next-Generation Dental Treatment Consoles:
\\n
- \\n
  Functions as the core horizontal support interface between the bottom scissor-lift elevation column and the motorized backrest/seat articulation sub-frame.
  \\n
\\n
\\n
Specialized Oral & Maxillofacial Surgical Chairs:
\\n
- \\n
  Delivers absolute structural rigidity during intricate microsurgery, dental implant placements, and prolonged endodontic treatments where any mechanical wobble, vibration, or drift would compromise surgical precision.
  \\n
\\n
\\n
High-Throughput Clinical Environments:
\\n
- \\n
  Built to endure the demanding operational tempo of hospital dental wards and high-volume outpatient clinics, handling continuous adjustments for hundreds of patients daily without structural fatigue or joint loosening.
  \\n
\\n
\\n
Intense Disinfection & Sanitization Regimes:
\\n
- \\n
  Resists routine wipe-downs with harsh quaternary ammonium compounds, alcohol-based solutions, and chlorine-based surface disinfectants without discoloration, bubbling, or degradation of the protective finish.
  \\n
\\n

\\n

5. Quality Inspection Protocols & Metrology

\\n

To ensure zero-defect delivery for critical medical equipment, each production batch adheres to an exhaustive Quality Assurance (QA) and In-Process Quality Control (IPQC) framework:

\\n

\\n
First Article & In-Process Inspection: Dimensional verification is executed at regular production intervals using calibrated vernier height gages, digital calipers, depth micrometers, and thread go/no-go plug gages.
\\n
\\n
Comprehensive Go/No-Go Fixturing: Complex hole-pattern relationships, locating dowel positions, and slot geometries are cross-checked using dedicated hard inspection tooling to guarantee 100% plug-and-play assembly line compatibility.
\\n
\\n
Visual & Surface Quality Control: Coated surfaces are inspected under standardized diffuse lighting to verify color uniformity, texture consistency, and the complete absence of runs, sags, pinholes, or particulate contamination.
\\n

\\n

6. Key Product Advantages & Engineering Highlights

\\n

\\n
Optimized Rigidity-to-Weight Performance: The A356-T6 aluminum construction backed by radial ribbing provides the structural stiffness of heavy cast iron at a fraction of the weight, reducing the mechanical burden and energy draw on chair elevation motors.
\\n
\\n
Zero-Backlash Mechanical Alignment: Precision CNC-machined reference surfaces and balanced fastener layouts prevent mechanical play and squeaking, ensuring smooth, silent recline and elevation motions that maximize patient comfort.
\\n
\\n
Superior Environmental & Chemical Resilience: The specialized Gray Granite powder coating offers outstanding barrier protection against moisture, physiological fluids, and hospital-grade sanitizers, preventing galvanic corrosion and surface oxidation.
\\n
\\n
Ergonomic Safety & Cable Longevity: Fully deburred cable channels with generous transition radii eliminate the risk of severed signal lines or fluid leaks, protecting both the machine’s internal systems and clinical technicians during routine maintenance.
\\n

\\n

7. Commercial Value & OEM Benefits

\\n

Partnering with a proven manufacturing process for this critical dental chair plate delivers substantial strategic value to dental equipment OEMs:

\\n

\\n
Accelerated Assembly Line Throughput: High dimensional repeatability and pristine, pre-masked threaded connections eliminate on-site re-tapping, shimming, or fitting modifications, drastically cutting assembly cycle times.
\\n
\\n
Drastic Reduction in Warranty Claims: The high fatigue resistance of heat-treated aluminum and durable powder finish minimize service calls related to structural sagging, fastener stripping, or cosmetic wear over a decade-long product service life.
\\n
\\n
Enhanced Brand Prestige: The refined granite-texture aesthetic and ultra-smooth mechanical performance reinforce the dental brand's reputation for premium quality, safety, and modern ergonomic design in global healthcare markets.
\\n
\\n
Full Medical Regulatory Compliance: Standardized process inspection records, material traceability, and non-toxic, RoHS-compliant surface finishes simplify customer submissions for international medical device certifications, including CE, FDA, and ISO 13485 audits.
\\n

\\n

FAQ

\\n

Q1: Will the coating peel or corrode with frequent use of medical disinfectants?

\\n

Q2: Do threaded holes and mating surfaces require secondary cleaning or re-tapping during OEM assembly?

\\n

Q3: Will internal fluid lines and electrical wiring suffer edge abrasion during frequent chair adjustments?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Architecture Overview

\\n

2. Material Engineering & Metallurgical Architecture

\\n

3. Precision Multi-Axis Machining & Dimensional Tolerancing

\\n

4. Surface Finishing, Masking Protocols & Quality Assurance

\\n

\\n
All threaded apertures (including 1/4-20 UNC and 10-32 UNF) are masked against powder ingress;
\\n
\\n
Precision 0.501 inch and 0.502 inch reamed pin bores are 100% masked on all interior mating surfaces;
\\n
\\n
0.625 inch pivot bores across both feet are masked on all interior faces;
\\n
\\n
Controlled overspray is selectively permitted across designated non-functional interior casting surfaces to optimize coating cycle efficiency without compromising structural fits.
\\n

\\n

5. Clinical Ergonomics & Operational Application Scenarios

\\n

In modern clinical practice, dental treatment chairs must accommodate an extraordinarily diverse demographic while providing flawless stability during delicate microscopic procedures:

\\n

\\n
General Restorative Dentistry & Prophylaxis: The leg support maintains synchronized, vibration-free angular adjustment during routine chair elevation, Trendelenburg tilting, and return-to-exit movements. It provides rigid knee and lower-calf stabilization that alleviates lumbar spinal tension in seated patients, facilitating ergonomic positioning for dentists and hygienists during extended treatment sessions.
\\n
\\n
Oral & Maxillofacial Surgery and Dental Implantology: During prolonged surgical interventions exceeding 120 to 180 minutes, any mechanical deflection or microscopic backlash under patient weight creates visual disruption under high-magnification surgical loupes and operating microscopes. The component provides a rock-solid structural foundation with zero discernible flexure under concentrated lower-body loads.
\\n
\\n
Pediatric, Bariatric & Geriatric Patient Care: Engineered with a conservative structural safety factor exceeding 4.0, the leg support effortlessly accommodates bariatric patient capacities up to 250 kg (550 lbs) dynamic load and over 800 kg static load without plastic deformation, while its smooth contour profile prevents soft-tissue pinching during automated leg-rest retraction.
\\n

\\n

6. Engineering Advantages & Comparative Value Matrix

\\n

The 113-015-025-H leg support establishes a benchmark in dental structural engineering through five distinct architectural pillars:

\\n

\\n
High Specific Rigidity & Vibration Damping: The A356-T6 alloy matrix attenuates high-frequency harmonics generated by hydraulic actuators and electric spindle motors, eliminating tactile vibration transfer to the patient.
\\n
\\n
Micro-Inch Kinematic Precision: Tight bilateral reamed tolerances (+0.001/-0.000 in / ±0.025 mm) eliminate mechanical hysteresis and wobbling throughout 100,000+ articulation cycles, guaranteeing smooth, silent motion.
\\n
\\n
Full Surface Passivation & Infection Control: Chemical-resistant powder coating prevents oxidative pitting and galvanic corrosion even under intensive daily wiping protocols mandated by ISO 13485 medical cleaning standards.
\\n
\\n
Reduced Actuator Load: The optimized topological casting geometry lowers total assembly weight by 42% compared to traditional ductile iron or welded steel brackets, extending the operational lifespan of chair lifting motors and hydraulic seals.
\\n
\\n
Total Life-Cycle Economy: By eliminating field fatigue fractures, bushing misalignment, and surface degradation, the component dramatically lowers the Total Cost of Ownership (TCO) for dental equipment OEMs and clinical end-users.
\\n

\\n

FAQ

\\n

Q1: Why is A356-T6 cast aluminum used instead of traditional cast iron or welded steel?

\\n

Q2: Why is 100% masking strictly required for pin bores (0.502/0.625\\\") and threaded holes prior to painting?

\\n

Q3: Why does the blueprint explicitly mandate \\\"Minimize hand grinding near detent groove\\\"?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Product Identification and Architectural Role

\\n

                     +---------------------------------------+\\n                     |    1. Primary Ingot & Alloy Smelt     |\\n                     |       (Medical-Grade Cast Alloy)      |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    2. Permanent Mold Gravity Casting  |\\n                     |     (Integrally Cast Ribs & Bosses)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    3. T6 Solution & Aging Treatment   |\\n                     |     (High Yield & Fatigue Strength)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    4. Multi-Axis Precision CNC Machining\\n                     |       - Pivot Ears In-line Bores      |\\n                     |       - Multi-Thread Drilling/Tapping |\\n                     |       - Routing Cutouts & Spotfaces   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    5. Dual-Action (DA) Orbital Sanding|\\n                     |     (Deburring, Edge Radiusing R0.5)  |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    6. Masking & Snow White Coating    |\\n                     |     (Medical Spec & Color Standard)   |\\n                     +---------------------------------------+\\n

\\n

2. Material Science and Structural Metallurgy

\\n

3. Comprehensive Manufacturing Lifecycle and Processing Flow

\\n

The production methodology follows a rigorous, multi-stage medical manufacturing protocol designed to ensure dimensional repeatability, geometric precision, and aesthetic presentation:

\\n

Phase A: Permanent Mold Precision Casting

\\n

Phase B: Advanced Multi-Axis CNC Precision Machining

\\n

Following thermal treatment, the raw casting undergoes multi-axis CNC milling, precision boring, and automated tapping operations:

\\n

\\n
Coaxial Articulation Pivot Bores: The heavy-duty lower hinge ears are bored in a single coordinated machining setup using dedicated line-boring tooling. This process achieves true coaxial alignment from side to side, ensuring smooth, friction-free rotational coupling with the primary drive pins and eliminating mechanical binding during backrest recline.
\\n
\\n
Specialized Fastener Matrix: High-speed milling spindles generate multiple groups of fine and coarse internal threads, counterbored clearance holes, and precision spotfaces across the casting. These threaded groupings accommodate structural tie-bars, motor drive brackets, side armrest mounts, sensory feedback modules, and internal ground wire terminals.
\\n
\\n
Internal Passages and Lateral Cutouts: Symmetrical conduit pass-through openings and lateral edge reliefs are machined through the sidewalls to facilitate smooth, concealed routing of vacuum suction lines, water conduits, fiber-optic illuminator cabling, and electronic communication buses.
\\n
\\n
Cushion Mounting Interfaces: Perimeter mounting pads are face-milled to establish uniform seating lands for the quick-mount attachment of ergonomic upholstery and lumbar support components.
\\n

\\n

Phase C: Dual-Action (DA) Mechanical Surface Conditioning

\\n

Phase D: Precision Masking and Surface Decontamination

\\n

Phase E: Medical-Grade Protective Coating Application

\\n

4. Quality Assurance, Regulatory Compliance, and Metrology

\\n

Quality control protocols are tightly woven into every stage of the manufacturing sequence:

\\n

\\n
Coordinate Measuring Metrology (CMM): First-article castings and production lots are validated on advanced Coordinate Measuring Machines to verify multi-axis datums, pivot bore true-position alignment, boss coplanarity, and thread location accuracy.
\\n
\\n
Thread Engagement Inspection: All internal tapped holes are verified with calibrated thread plug gauges after coating removal to ensure effortless assembly and thread integrity without paint contamination.
\\n
\\n
Coating Adhesion and Chemical Durability: Coated surfaces undergo cross-hatch tape adhesion testing and chemical wipe testing. The resilient snow-white coating demonstrates resistance to hospital-grade disinfectants, medical rubbing alcohols, quaternary ammonium wipes, and sodium hypochlorite sanitizing agents, retaining its color fidelity, gloss level, and surface integrity without softening, yellowing, or peeling.
\\n

\\n

5. Medical Operatory Applications and Operational Value

\\n

The backrest assembly is deployed as a core structural element in premium dental operatory treatment centers, pediatric examination units, and specialized oral maxillofacial surgical suites:

\\n

\\n
Kinematic Smoothness and Recline Stability: The precision-bored dual hinge ears integrate smoothly with hydraulic tilt cylinders and synchronized dual-spindle linear actuators, delivering gentle, silent angular recline motions from upright patient consultation to full supine surgical positioning.
\\n
\\n
Concealed Utility Distribution: Integrated lateral access ports and deep internal casting channels protect delicate pneumatic tubing, clean water delivery lines, and high-frequency digital sensor wiring, shielding them from mechanical abrasion or accidental pinching.
\\n
\\n
Aseptic Maintenance and Ergonomics: The continuous, non-porous exterior coating allows clinical staff to perform rapid, effective disinfection between patient appointments. Its sleek, radiused contours prevent dirt accumulation, enhancing clinic hygiene while providing dentists and dental assistants with comfortable, close-proximity patient access during delicate restorative procedures.
\\n

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"}],"offers":{"@type":"Offer","availability":"https://schema.org/InStock","priceCurrency":"USD","description":"/user, /month","name":"NingboLiqin","price":99,"url":"https://www.cncliq.com/en/products"}},{"@context":"https://schema.org","@type":"ItemList","@id":"https://www.cncliq.com/#product-suite","image":"https://www.cncliq.com/image/img/logo.png","name":"NingboLiqin Magnetic Products","description":"Browse products and filter by category.","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate","@type":"WebPageElement","name":"Medical-Grade Dental Chair Structural Articulation & Base Plate","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Positioning

\\n

2. Premium Engineering Materials & Metallurgical Properties

\\n

2.1 A356-T6 / A365-T6 Cast Aluminum Alloy Matrix

\\n

\\n
Alloy Purity & Casting Integrity: The aluminum-silicon-magnesium composition provides dense, defect-free metal consolidation during the casting process, preventing common microstructural flaws such as internal shrinkage cavities, gas inclusions, and porosity.
\\n
\\n
T6 Heat Treatment Regimen: Following the casting operation, the component undergoes a complete solution heat treatment followed by precision artificial aging (T6 temper). This metallurgical transformation homogenizes the solid solution and forms densely distributed precipitate hardening phases throughout the crystalline lattice, maximizing yield strength, tensile toughness, and fatigue resistance under high cyclic dynamic loading.
\\n

\\n

2.2 Structural Topology Optimization & Rib Reinforcement

\\n

Unlike standard flat plates that suffer from flexural distortion under offset patient loads, this chair plate incorporates an advanced reverse-side radial stiffener matrix:

\\n

\\n
Radial Load Dispersion Ribs: A web of structural reinforcement ribs radiates outward from the central load-bearing hub to the peripheral mounting ears. This architectural layout channels multidirectional bending and torsional moments away from the center, effectively distributing mechanical stress throughout the entire perimeter.
\\n
\\n
Targeted Material Distribution: High-stress zones feature reinforced localized wall thickness, while non-load-bearing regions are sculpted to minimize unnecessary weight. This optimization ensures a minimum nominal wall thickness across thin-gauge sections without sacrificing structural stiffness, keeping the overall assembly lightweight and easy to manipulate during factory integration.
\\n

\\n

3. Precision Manufacturing & Advanced Processing Workflow

\\n

The manufacturing lifecycle of the dental chair plate reflects a tightly controlled sequence of metallurgical, mechanical, and surface engineering processes:

\\n

3.1 Casting, Forming & Thermal Stress Relief

\\n

\\n
The initial rough casting is formed in precision permanent molds to achieve consistent dimensional profiles and smooth raw surface contours.
\\n
\\n
Post-casting thermal annealing and structural straightening eliminate residual internal stresses accumulated during solidification, preventing post-machining warping or dimensional relaxation over years of active clinic operation.
\\n

\\n

3.2 Multi-Axis CNC Precision Machining

\\n

Following casting qualification, the component transitions to state-of-the-art multi-axis CNC machining centers for single-setup geometric refinement:

\\n

\\n
Central Pivot Bore & Bearing Race: The large circular central aperture and its concentric locating counterbore are high-speed turned and milled to exacting tolerances, providing seamless seating for central rotary bearings, slew rings, and pivotal articulation shafts.
\\n
\\n
Machined Pad Coplanarity & Flatness: All peripheral and central mounting pads are machined in coordinated reference passes. Total flatness across all functional contact pads is inspected against tight geometric tolerance bands, eliminating assembly bind, uneven bolt preload, and rocking when bolted to the patient chair frame.
\\n
\\n
Complex Threaded Hole Arrays: The plate features a series of multi-standard fastener points tailored for diverse interface requirements:
\\n
- \\n
  Six radial mounting positions arranged in an equidistant 60-degree circular bolt pattern with 1/4-20 UNC-2B internal threads for secure anchoring to the primary chassis.
  \\n
- \\n
  Secondary mounting points with 10-32 UNF-2B tapped holes (including through-hole and controlled-depth blind configurations designed with specific clearances to ensure no breakthrough on aesthetic exterior faces).
  \\n
- \\n
  Micro-fastener points featuring M3 metric threads for mounting internal sensor brackets and position limit switches.
  \\n
\\n

\\n

3.3 Cable Routing & Pass-Through Windows

\\n

Modern dental chairs route extensive arrays of pneumatic supply lines, high-pressure water feeds, surgical suction tubes, and digital sensor buses through the articulation core:

\\n

\\n
The plate integrates dedicated wiring clearance channels and smooth pass-through apertures.
\\n
\\n
All routing edges and slot transitions undergo dedicated automated and manual deburring, resulting in continuous rounded radii (such as R3.3 blends) that completely eliminate burrs and sharp edges, preventing abrasion or pinching of flexible utility lines during chair elevation and recline cycles.
\\n

\\n

3.4 Medical-Grade \\\"Gray Granite\\\" Powder Coating & Selective Masking

\\n

The exterior surface of the plate is protected by an industrial-grade architectural powder coat finish:

\\n

\\n
Surface Preparation: The unmasked cast exterior undergoes thorough solvent degreasing and surface conditioning to ensure maximum chemical and physical bonding of the polymer coating.
\\n
\\n
Specialized Color & Texture Formulation: The coating is formulated in an elegant \\\"Gray Granite\\\" textured finish (PTUS37AS19 by Powder Technology, Inc.). This micro-textured finish provides high tactile quality, eliminates specular glare under dental operating lights, and hides superficial scratches.
\\n
\\n
Precision Film Thickness: The coating application is maintained within a strict 1 to 3 mil thickness envelope, achieving complete, uniform coverage while preventing excessive buildup that could lead to edge chipping or flaking.
\\n
\\n
Comprehensive Thread & Interface Masking: Before entering the electrostatic spray booth, all functional tapped holes (1/4-20, 10-32, M3), central bearing fits, and critical datum surfaces are sealed with custom thermal masking plugs and tapes. This guarantees that all machined interfaces remain free of paint overspray, maintaining zero-clearance mechanical fits during assembly.
\\n

\\n

4. Application Scenarios & System-Level Integration

\\n

The chair plate is purpose-built for diverse clinical environments where structural dependability and hygienic integrity are paramount:

\\n

\\n
Next-Generation Dental Treatment Consoles:
\\n
- \\n
  Functions as the core horizontal support interface between the bottom scissor-lift elevation column and the motorized backrest/seat articulation sub-frame.
  \\n
\\n
\\n
Specialized Oral & Maxillofacial Surgical Chairs:
\\n
- \\n
  Delivers absolute structural rigidity during intricate microsurgery, dental implant placements, and prolonged endodontic treatments where any mechanical wobble, vibration, or drift would compromise surgical precision.
  \\n
\\n
\\n
High-Throughput Clinical Environments:
\\n
- \\n
  Built to endure the demanding operational tempo of hospital dental wards and high-volume outpatient clinics, handling continuous adjustments for hundreds of patients daily without structural fatigue or joint loosening.
  \\n
\\n
\\n
Intense Disinfection & Sanitization Regimes:
\\n
- \\n
  Resists routine wipe-downs with harsh quaternary ammonium compounds, alcohol-based solutions, and chlorine-based surface disinfectants without discoloration, bubbling, or degradation of the protective finish.
  \\n
\\n

\\n

5. Quality Inspection Protocols & Metrology

\\n

To ensure zero-defect delivery for critical medical equipment, each production batch adheres to an exhaustive Quality Assurance (QA) and In-Process Quality Control (IPQC) framework:

\\n

\\n
First Article & In-Process Inspection: Dimensional verification is executed at regular production intervals using calibrated vernier height gages, digital calipers, depth micrometers, and thread go/no-go plug gages.
\\n
\\n
Comprehensive Go/No-Go Fixturing: Complex hole-pattern relationships, locating dowel positions, and slot geometries are cross-checked using dedicated hard inspection tooling to guarantee 100% plug-and-play assembly line compatibility.
\\n
\\n
Visual & Surface Quality Control: Coated surfaces are inspected under standardized diffuse lighting to verify color uniformity, texture consistency, and the complete absence of runs, sags, pinholes, or particulate contamination.
\\n

\\n

6. Key Product Advantages & Engineering Highlights

\\n

\\n
Optimized Rigidity-to-Weight Performance: The A356-T6 aluminum construction backed by radial ribbing provides the structural stiffness of heavy cast iron at a fraction of the weight, reducing the mechanical burden and energy draw on chair elevation motors.
\\n
\\n
Zero-Backlash Mechanical Alignment: Precision CNC-machined reference surfaces and balanced fastener layouts prevent mechanical play and squeaking, ensuring smooth, silent recline and elevation motions that maximize patient comfort.
\\n
\\n
Superior Environmental & Chemical Resilience: The specialized Gray Granite powder coating offers outstanding barrier protection against moisture, physiological fluids, and hospital-grade sanitizers, preventing galvanic corrosion and surface oxidation.
\\n
\\n
Ergonomic Safety & Cable Longevity: Fully deburred cable channels with generous transition radii eliminate the risk of severed signal lines or fluid leaks, protecting both the machine’s internal systems and clinical technicians during routine maintenance.
\\n

\\n

7. Commercial Value & OEM Benefits

\\n

Partnering with a proven manufacturing process for this critical dental chair plate delivers substantial strategic value to dental equipment OEMs:

\\n

\\n
Accelerated Assembly Line Throughput: High dimensional repeatability and pristine, pre-masked threaded connections eliminate on-site re-tapping, shimming, or fitting modifications, drastically cutting assembly cycle times.
\\n
\\n
Drastic Reduction in Warranty Claims: The high fatigue resistance of heat-treated aluminum and durable powder finish minimize service calls related to structural sagging, fastener stripping, or cosmetic wear over a decade-long product service life.
\\n
\\n
Enhanced Brand Prestige: The refined granite-texture aesthetic and ultra-smooth mechanical performance reinforce the dental brand's reputation for premium quality, safety, and modern ergonomic design in global healthcare markets.
\\n
\\n
Full Medical Regulatory Compliance: Standardized process inspection records, material traceability, and non-toxic, RoHS-compliant surface finishes simplify customer submissions for international medical device certifications, including CE, FDA, and ISO 13485 audits.
\\n

\\n

FAQ

\\n

Q1: Will the coating peel or corrode with frequent use of medical disinfectants?

\\n

Q2: Do threaded holes and mating surfaces require secondary cleaning or re-tapping during OEM assembly?

\\n

Q3: Will internal fluid lines and electrical wiring suffer edge abrasion during frequent chair adjustments?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"}},{"@type":"ListItem","position":2,"item":{"@id":"https://www.cncliq.com/product/medical-dental-chair-leg-support","@type":"WebPageElement","name":"Medical Dental Chair Leg Support","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Architecture Overview

\\n

2. Material Engineering & Metallurgical Architecture

\\n

3. Precision Multi-Axis Machining & Dimensional Tolerancing

\\n

4. Surface Finishing, Masking Protocols & Quality Assurance

\\n

\\n
All threaded apertures (including 1/4-20 UNC and 10-32 UNF) are masked against powder ingress;
\\n
\\n
Precision 0.501 inch and 0.502 inch reamed pin bores are 100% masked on all interior mating surfaces;
\\n
\\n
0.625 inch pivot bores across both feet are masked on all interior faces;
\\n
\\n
Controlled overspray is selectively permitted across designated non-functional interior casting surfaces to optimize coating cycle efficiency without compromising structural fits.
\\n

\\n

5. Clinical Ergonomics & Operational Application Scenarios

\\n

In modern clinical practice, dental treatment chairs must accommodate an extraordinarily diverse demographic while providing flawless stability during delicate microscopic procedures:

\\n

\\n
General Restorative Dentistry & Prophylaxis: The leg support maintains synchronized, vibration-free angular adjustment during routine chair elevation, Trendelenburg tilting, and return-to-exit movements. It provides rigid knee and lower-calf stabilization that alleviates lumbar spinal tension in seated patients, facilitating ergonomic positioning for dentists and hygienists during extended treatment sessions.
\\n
\\n
Oral & Maxillofacial Surgery and Dental Implantology: During prolonged surgical interventions exceeding 120 to 180 minutes, any mechanical deflection or microscopic backlash under patient weight creates visual disruption under high-magnification surgical loupes and operating microscopes. The component provides a rock-solid structural foundation with zero discernible flexure under concentrated lower-body loads.
\\n
\\n
Pediatric, Bariatric & Geriatric Patient Care: Engineered with a conservative structural safety factor exceeding 4.0, the leg support effortlessly accommodates bariatric patient capacities up to 250 kg (550 lbs) dynamic load and over 800 kg static load without plastic deformation, while its smooth contour profile prevents soft-tissue pinching during automated leg-rest retraction.
\\n

\\n

6. Engineering Advantages & Comparative Value Matrix

\\n

The 113-015-025-H leg support establishes a benchmark in dental structural engineering through five distinct architectural pillars:

\\n

\\n
High Specific Rigidity & Vibration Damping: The A356-T6 alloy matrix attenuates high-frequency harmonics generated by hydraulic actuators and electric spindle motors, eliminating tactile vibration transfer to the patient.
\\n
\\n
Micro-Inch Kinematic Precision: Tight bilateral reamed tolerances (+0.001/-0.000 in / ±0.025 mm) eliminate mechanical hysteresis and wobbling throughout 100,000+ articulation cycles, guaranteeing smooth, silent motion.
\\n
\\n
Full Surface Passivation & Infection Control: Chemical-resistant powder coating prevents oxidative pitting and galvanic corrosion even under intensive daily wiping protocols mandated by ISO 13485 medical cleaning standards.
\\n
\\n
Reduced Actuator Load: The optimized topological casting geometry lowers total assembly weight by 42% compared to traditional ductile iron or welded steel brackets, extending the operational lifespan of chair lifting motors and hydraulic seals.
\\n
\\n
Total Life-Cycle Economy: By eliminating field fatigue fractures, bushing misalignment, and surface degradation, the component dramatically lowers the Total Cost of Ownership (TCO) for dental equipment OEMs and clinical end-users.
\\n

\\n

FAQ

\\n

Q1: Why is A356-T6 cast aluminum used instead of traditional cast iron or welded steel?

\\n

Q2: Why is 100% masking strictly required for pin bores (0.502/0.625\\\") and threaded holes prior to painting?

\\n

Q3: Why does the blueprint explicitly mandate \\\"Minimize hand grinding near detent groove\\\"?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"}},{"@type":"ListItem","position":3,"item":{"@id":"https://www.cncliq.com/product/dental-chair-backrest","@type":"WebPageElement","name":"Dental Chair Backrest","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Product Identification and Architectural Role

\\n

                     +---------------------------------------+\\n                     |    1. Primary Ingot & Alloy Smelt     |\\n                     |       (Medical-Grade Cast Alloy)      |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    2. Permanent Mold Gravity Casting  |\\n                     |     (Integrally Cast Ribs & Bosses)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    3. T6 Solution & Aging Treatment   |\\n                     |     (High Yield & Fatigue Strength)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    4. Multi-Axis Precision CNC Machining\\n                     |       - Pivot Ears In-line Bores      |\\n                     |       - Multi-Thread Drilling/Tapping |\\n                     |       - Routing Cutouts & Spotfaces   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    5. Dual-Action (DA) Orbital Sanding|\\n                     |     (Deburring, Edge Radiusing R0.5)  |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    6. Masking & Snow White Coating    |\\n                     |     (Medical Spec & Color Standard)   |\\n                     +---------------------------------------+\\n

\\n

2. Material Science and Structural Metallurgy

\\n

3. Comprehensive Manufacturing Lifecycle and Processing Flow

\\n

The production methodology follows a rigorous, multi-stage medical manufacturing protocol designed to ensure dimensional repeatability, geometric precision, and aesthetic presentation:

\\n

Phase A: Permanent Mold Precision Casting

\\n

Phase B: Advanced Multi-Axis CNC Precision Machining

\\n

Following thermal treatment, the raw casting undergoes multi-axis CNC milling, precision boring, and automated tapping operations:

\\n

\\n
Coaxial Articulation Pivot Bores: The heavy-duty lower hinge ears are bored in a single coordinated machining setup using dedicated line-boring tooling. This process achieves true coaxial alignment from side to side, ensuring smooth, friction-free rotational coupling with the primary drive pins and eliminating mechanical binding during backrest recline.
\\n
\\n
Specialized Fastener Matrix: High-speed milling spindles generate multiple groups of fine and coarse internal threads, counterbored clearance holes, and precision spotfaces across the casting. These threaded groupings accommodate structural tie-bars, motor drive brackets, side armrest mounts, sensory feedback modules, and internal ground wire terminals.
\\n
\\n
Internal Passages and Lateral Cutouts: Symmetrical conduit pass-through openings and lateral edge reliefs are machined through the sidewalls to facilitate smooth, concealed routing of vacuum suction lines, water conduits, fiber-optic illuminator cabling, and electronic communication buses.
\\n
\\n
Cushion Mounting Interfaces: Perimeter mounting pads are face-milled to establish uniform seating lands for the quick-mount attachment of ergonomic upholstery and lumbar support components.
\\n

\\n

Phase C: Dual-Action (DA) Mechanical Surface Conditioning

\\n

Phase D: Precision Masking and Surface Decontamination

\\n

Phase E: Medical-Grade Protective Coating Application

\\n

4. Quality Assurance, Regulatory Compliance, and Metrology

\\n

Quality control protocols are tightly woven into every stage of the manufacturing sequence:

\\n

\\n
Coordinate Measuring Metrology (CMM): First-article castings and production lots are validated on advanced Coordinate Measuring Machines to verify multi-axis datums, pivot bore true-position alignment, boss coplanarity, and thread location accuracy.
\\n
\\n
Thread Engagement Inspection: All internal tapped holes are verified with calibrated thread plug gauges after coating removal to ensure effortless assembly and thread integrity without paint contamination.
\\n
\\n
Coating Adhesion and Chemical Durability: Coated surfaces undergo cross-hatch tape adhesion testing and chemical wipe testing. The resilient snow-white coating demonstrates resistance to hospital-grade disinfectants, medical rubbing alcohols, quaternary ammonium wipes, and sodium hypochlorite sanitizing agents, retaining its color fidelity, gloss level, and surface integrity without softening, yellowing, or peeling.
\\n

\\n

5. Medical Operatory Applications and Operational Value

\\n

The backrest assembly is deployed as a core structural element in premium dental operatory treatment centers, pediatric examination units, and specialized oral maxillofacial surgical suites:

\\n

\\n
Kinematic Smoothness and Recline Stability: The precision-bored dual hinge ears integrate smoothly with hydraulic tilt cylinders and synchronized dual-spindle linear actuators, delivering gentle, silent angular recline motions from upright patient consultation to full supine surgical positioning.
\\n
\\n
Concealed Utility Distribution: Integrated lateral access ports and deep internal casting channels protect delicate pneumatic tubing, clean water delivery lines, and high-frequency digital sensor wiring, shielding them from mechanical abrasion or accidental pinching.
\\n
\\n
Aseptic Maintenance and Ergonomics: The continuous, non-porous exterior coating allows clinical staff to perform rapid, effective disinfection between patient appointments. Its sleek, radiused contours prevent dirt accumulation, enhancing clinic hygiene while providing dentists and dental assistants with comfortable, close-proximity patient access during delicate restorative procedures.
\\n

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"}}]},{"@context":"https://schema.org","@type":"HowTo","@id":"https://www.cncliq.com/#growth-loop","description":"Browse products and filter by category.","image":"https://www.cncliq.com/image/img/logo.png","name":"Product List","step":[{"@type":"HowToStep","position":1,"name":"Medical-Grade Dental Chair Structural Articulation & Base Plate","text":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Positioning

\\n

2. Premium Engineering Materials & Metallurgical Properties

\\n

2.1 A356-T6 / A365-T6 Cast Aluminum Alloy Matrix

\\n

\\n
Alloy Purity & Casting Integrity: The aluminum-silicon-magnesium composition provides dense, defect-free metal consolidation during the casting process, preventing common microstructural flaws such as internal shrinkage cavities, gas inclusions, and porosity.
\\n
\\n
T6 Heat Treatment Regimen: Following the casting operation, the component undergoes a complete solution heat treatment followed by precision artificial aging (T6 temper). This metallurgical transformation homogenizes the solid solution and forms densely distributed precipitate hardening phases throughout the crystalline lattice, maximizing yield strength, tensile toughness, and fatigue resistance under high cyclic dynamic loading.
\\n

\\n

2.2 Structural Topology Optimization & Rib Reinforcement

\\n

Unlike standard flat plates that suffer from flexural distortion under offset patient loads, this chair plate incorporates an advanced reverse-side radial stiffener matrix:

\\n

\\n
Radial Load Dispersion Ribs: A web of structural reinforcement ribs radiates outward from the central load-bearing hub to the peripheral mounting ears. This architectural layout channels multidirectional bending and torsional moments away from the center, effectively distributing mechanical stress throughout the entire perimeter.
\\n
\\n
Targeted Material Distribution: High-stress zones feature reinforced localized wall thickness, while non-load-bearing regions are sculpted to minimize unnecessary weight. This optimization ensures a minimum nominal wall thickness across thin-gauge sections without sacrificing structural stiffness, keeping the overall assembly lightweight and easy to manipulate during factory integration.
\\n

\\n

3. Precision Manufacturing & Advanced Processing Workflow

\\n

The manufacturing lifecycle of the dental chair plate reflects a tightly controlled sequence of metallurgical, mechanical, and surface engineering processes:

\\n

3.1 Casting, Forming & Thermal Stress Relief

\\n

\\n
The initial rough casting is formed in precision permanent molds to achieve consistent dimensional profiles and smooth raw surface contours.
\\n
\\n
Post-casting thermal annealing and structural straightening eliminate residual internal stresses accumulated during solidification, preventing post-machining warping or dimensional relaxation over years of active clinic operation.
\\n

\\n

3.2 Multi-Axis CNC Precision Machining

\\n

Following casting qualification, the component transitions to state-of-the-art multi-axis CNC machining centers for single-setup geometric refinement:

\\n

\\n
Central Pivot Bore & Bearing Race: The large circular central aperture and its concentric locating counterbore are high-speed turned and milled to exacting tolerances, providing seamless seating for central rotary bearings, slew rings, and pivotal articulation shafts.
\\n
\\n
Machined Pad Coplanarity & Flatness: All peripheral and central mounting pads are machined in coordinated reference passes. Total flatness across all functional contact pads is inspected against tight geometric tolerance bands, eliminating assembly bind, uneven bolt preload, and rocking when bolted to the patient chair frame.
\\n
\\n
Complex Threaded Hole Arrays: The plate features a series of multi-standard fastener points tailored for diverse interface requirements:
\\n
- \\n
  Six radial mounting positions arranged in an equidistant 60-degree circular bolt pattern with 1/4-20 UNC-2B internal threads for secure anchoring to the primary chassis.
  \\n
- \\n
  Secondary mounting points with 10-32 UNF-2B tapped holes (including through-hole and controlled-depth blind configurations designed with specific clearances to ensure no breakthrough on aesthetic exterior faces).
  \\n
- \\n
  Micro-fastener points featuring M3 metric threads for mounting internal sensor brackets and position limit switches.
  \\n
\\n

\\n

3.3 Cable Routing & Pass-Through Windows

\\n

Modern dental chairs route extensive arrays of pneumatic supply lines, high-pressure water feeds, surgical suction tubes, and digital sensor buses through the articulation core:

\\n

\\n
The plate integrates dedicated wiring clearance channels and smooth pass-through apertures.
\\n
\\n
All routing edges and slot transitions undergo dedicated automated and manual deburring, resulting in continuous rounded radii (such as R3.3 blends) that completely eliminate burrs and sharp edges, preventing abrasion or pinching of flexible utility lines during chair elevation and recline cycles.
\\n

\\n

3.4 Medical-Grade \\\"Gray Granite\\\" Powder Coating & Selective Masking

\\n

The exterior surface of the plate is protected by an industrial-grade architectural powder coat finish:

\\n

\\n
Surface Preparation: The unmasked cast exterior undergoes thorough solvent degreasing and surface conditioning to ensure maximum chemical and physical bonding of the polymer coating.
\\n
\\n
Specialized Color & Texture Formulation: The coating is formulated in an elegant \\\"Gray Granite\\\" textured finish (PTUS37AS19 by Powder Technology, Inc.). This micro-textured finish provides high tactile quality, eliminates specular glare under dental operating lights, and hides superficial scratches.
\\n
\\n
Precision Film Thickness: The coating application is maintained within a strict 1 to 3 mil thickness envelope, achieving complete, uniform coverage while preventing excessive buildup that could lead to edge chipping or flaking.
\\n
\\n
Comprehensive Thread & Interface Masking: Before entering the electrostatic spray booth, all functional tapped holes (1/4-20, 10-32, M3), central bearing fits, and critical datum surfaces are sealed with custom thermal masking plugs and tapes. This guarantees that all machined interfaces remain free of paint overspray, maintaining zero-clearance mechanical fits during assembly.
\\n

\\n

4. Application Scenarios & System-Level Integration

\\n

The chair plate is purpose-built for diverse clinical environments where structural dependability and hygienic integrity are paramount:

\\n

\\n
Next-Generation Dental Treatment Consoles:
\\n
- \\n
  Functions as the core horizontal support interface between the bottom scissor-lift elevation column and the motorized backrest/seat articulation sub-frame.
  \\n
\\n
\\n
Specialized Oral & Maxillofacial Surgical Chairs:
\\n
- \\n
  Delivers absolute structural rigidity during intricate microsurgery, dental implant placements, and prolonged endodontic treatments where any mechanical wobble, vibration, or drift would compromise surgical precision.
  \\n
\\n
\\n
High-Throughput Clinical Environments:
\\n
- \\n
  Built to endure the demanding operational tempo of hospital dental wards and high-volume outpatient clinics, handling continuous adjustments for hundreds of patients daily without structural fatigue or joint loosening.
  \\n
\\n
\\n
Intense Disinfection & Sanitization Regimes:
\\n
- \\n
  Resists routine wipe-downs with harsh quaternary ammonium compounds, alcohol-based solutions, and chlorine-based surface disinfectants without discoloration, bubbling, or degradation of the protective finish.
  \\n
\\n

\\n

5. Quality Inspection Protocols & Metrology

\\n

To ensure zero-defect delivery for critical medical equipment, each production batch adheres to an exhaustive Quality Assurance (QA) and In-Process Quality Control (IPQC) framework:

\\n

\\n
First Article & In-Process Inspection: Dimensional verification is executed at regular production intervals using calibrated vernier height gages, digital calipers, depth micrometers, and thread go/no-go plug gages.
\\n
\\n
Comprehensive Go/No-Go Fixturing: Complex hole-pattern relationships, locating dowel positions, and slot geometries are cross-checked using dedicated hard inspection tooling to guarantee 100% plug-and-play assembly line compatibility.
\\n
\\n
Visual & Surface Quality Control: Coated surfaces are inspected under standardized diffuse lighting to verify color uniformity, texture consistency, and the complete absence of runs, sags, pinholes, or particulate contamination.
\\n

\\n

6. Key Product Advantages & Engineering Highlights

\\n

\\n
Optimized Rigidity-to-Weight Performance: The A356-T6 aluminum construction backed by radial ribbing provides the structural stiffness of heavy cast iron at a fraction of the weight, reducing the mechanical burden and energy draw on chair elevation motors.
\\n
\\n
Zero-Backlash Mechanical Alignment: Precision CNC-machined reference surfaces and balanced fastener layouts prevent mechanical play and squeaking, ensuring smooth, silent recline and elevation motions that maximize patient comfort.
\\n
\\n
Superior Environmental & Chemical Resilience: The specialized Gray Granite powder coating offers outstanding barrier protection against moisture, physiological fluids, and hospital-grade sanitizers, preventing galvanic corrosion and surface oxidation.
\\n
\\n
Ergonomic Safety & Cable Longevity: Fully deburred cable channels with generous transition radii eliminate the risk of severed signal lines or fluid leaks, protecting both the machine’s internal systems and clinical technicians during routine maintenance.
\\n

\\n

7. Commercial Value & OEM Benefits

\\n

Partnering with a proven manufacturing process for this critical dental chair plate delivers substantial strategic value to dental equipment OEMs:

\\n

\\n
Accelerated Assembly Line Throughput: High dimensional repeatability and pristine, pre-masked threaded connections eliminate on-site re-tapping, shimming, or fitting modifications, drastically cutting assembly cycle times.
\\n
\\n
Drastic Reduction in Warranty Claims: The high fatigue resistance of heat-treated aluminum and durable powder finish minimize service calls related to structural sagging, fastener stripping, or cosmetic wear over a decade-long product service life.
\\n
\\n
Enhanced Brand Prestige: The refined granite-texture aesthetic and ultra-smooth mechanical performance reinforce the dental brand's reputation for premium quality, safety, and modern ergonomic design in global healthcare markets.
\\n
\\n
Full Medical Regulatory Compliance: Standardized process inspection records, material traceability, and non-toxic, RoHS-compliant surface finishes simplify customer submissions for international medical device certifications, including CE, FDA, and ISO 13485 audits.
\\n

\\n

FAQ

\\n

Q1: Will the coating peel or corrode with frequent use of medical disinfectants?

\\n

Q2: Do threaded holes and mating surfaces require secondary cleaning or re-tapping during OEM assembly?

\\n

Q3: Will internal fluid lines and electrical wiring suffer edge abrasion during frequent chair adjustments?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}","url":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate"},{"@type":"HowToStep","position":2,"name":"Medical Dental Chair Leg Support","text":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Architecture Overview

\\n

2. Material Engineering & Metallurgical Architecture

\\n

3. Precision Multi-Axis Machining & Dimensional Tolerancing

\\n

4. Surface Finishing, Masking Protocols & Quality Assurance

\\n

\\n
All threaded apertures (including 1/4-20 UNC and 10-32 UNF) are masked against powder ingress;
\\n
\\n
Precision 0.501 inch and 0.502 inch reamed pin bores are 100% masked on all interior mating surfaces;
\\n
\\n
0.625 inch pivot bores across both feet are masked on all interior faces;
\\n
\\n
Controlled overspray is selectively permitted across designated non-functional interior casting surfaces to optimize coating cycle efficiency without compromising structural fits.
\\n

\\n

5. Clinical Ergonomics & Operational Application Scenarios

\\n

In modern clinical practice, dental treatment chairs must accommodate an extraordinarily diverse demographic while providing flawless stability during delicate microscopic procedures:

\\n

\\n
General Restorative Dentistry & Prophylaxis: The leg support maintains synchronized, vibration-free angular adjustment during routine chair elevation, Trendelenburg tilting, and return-to-exit movements. It provides rigid knee and lower-calf stabilization that alleviates lumbar spinal tension in seated patients, facilitating ergonomic positioning for dentists and hygienists during extended treatment sessions.
\\n
\\n
Oral & Maxillofacial Surgery and Dental Implantology: During prolonged surgical interventions exceeding 120 to 180 minutes, any mechanical deflection or microscopic backlash under patient weight creates visual disruption under high-magnification surgical loupes and operating microscopes. The component provides a rock-solid structural foundation with zero discernible flexure under concentrated lower-body loads.
\\n
\\n
Pediatric, Bariatric & Geriatric Patient Care: Engineered with a conservative structural safety factor exceeding 4.0, the leg support effortlessly accommodates bariatric patient capacities up to 250 kg (550 lbs) dynamic load and over 800 kg static load without plastic deformation, while its smooth contour profile prevents soft-tissue pinching during automated leg-rest retraction.
\\n

\\n

6. Engineering Advantages & Comparative Value Matrix

\\n

The 113-015-025-H leg support establishes a benchmark in dental structural engineering through five distinct architectural pillars:

\\n

\\n
High Specific Rigidity & Vibration Damping: The A356-T6 alloy matrix attenuates high-frequency harmonics generated by hydraulic actuators and electric spindle motors, eliminating tactile vibration transfer to the patient.
\\n
\\n
Micro-Inch Kinematic Precision: Tight bilateral reamed tolerances (+0.001/-0.000 in / ±0.025 mm) eliminate mechanical hysteresis and wobbling throughout 100,000+ articulation cycles, guaranteeing smooth, silent motion.
\\n
\\n
Full Surface Passivation & Infection Control: Chemical-resistant powder coating prevents oxidative pitting and galvanic corrosion even under intensive daily wiping protocols mandated by ISO 13485 medical cleaning standards.
\\n
\\n
Reduced Actuator Load: The optimized topological casting geometry lowers total assembly weight by 42% compared to traditional ductile iron or welded steel brackets, extending the operational lifespan of chair lifting motors and hydraulic seals.
\\n
\\n
Total Life-Cycle Economy: By eliminating field fatigue fractures, bushing misalignment, and surface degradation, the component dramatically lowers the Total Cost of Ownership (TCO) for dental equipment OEMs and clinical end-users.
\\n

\\n

FAQ

\\n

Q1: Why is A356-T6 cast aluminum used instead of traditional cast iron or welded steel?

\\n

Q2: Why is 100% masking strictly required for pin bores (0.502/0.625\\\") and threaded holes prior to painting?

\\n

Q3: Why does the blueprint explicitly mandate \\\"Minimize hand grinding near detent groove\\\"?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}","url":"https://www.cncliq.com/product/medical-dental-chair-leg-support"},{"@type":"HowToStep","position":3,"name":"Dental Chair Backrest","text":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Product Identification and Architectural Role

\\n

                     +---------------------------------------+\\n                     |    1. Primary Ingot & Alloy Smelt     |\\n                     |       (Medical-Grade Cast Alloy)      |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    2. Permanent Mold Gravity Casting  |\\n                     |     (Integrally Cast Ribs & Bosses)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    3. T6 Solution & Aging Treatment   |\\n                     |     (High Yield & Fatigue Strength)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    4. Multi-Axis Precision CNC Machining\\n                     |       - Pivot Ears In-line Bores      |\\n                     |       - Multi-Thread Drilling/Tapping |\\n                     |       - Routing Cutouts & Spotfaces   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    5. Dual-Action (DA) Orbital Sanding|\\n                     |     (Deburring, Edge Radiusing R0.5)  |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    6. Masking & Snow White Coating    |\\n                     |     (Medical Spec & Color Standard)   |\\n                     +---------------------------------------+\\n

\\n

2. Material Science and Structural Metallurgy

\\n

3. Comprehensive Manufacturing Lifecycle and Processing Flow

\\n

The production methodology follows a rigorous, multi-stage medical manufacturing protocol designed to ensure dimensional repeatability, geometric precision, and aesthetic presentation:

\\n

Phase A: Permanent Mold Precision Casting

\\n

Phase B: Advanced Multi-Axis CNC Precision Machining

\\n

Following thermal treatment, the raw casting undergoes multi-axis CNC milling, precision boring, and automated tapping operations:

\\n

\\n
Coaxial Articulation Pivot Bores: The heavy-duty lower hinge ears are bored in a single coordinated machining setup using dedicated line-boring tooling. This process achieves true coaxial alignment from side to side, ensuring smooth, friction-free rotational coupling with the primary drive pins and eliminating mechanical binding during backrest recline.
\\n
\\n
Specialized Fastener Matrix: High-speed milling spindles generate multiple groups of fine and coarse internal threads, counterbored clearance holes, and precision spotfaces across the casting. These threaded groupings accommodate structural tie-bars, motor drive brackets, side armrest mounts, sensory feedback modules, and internal ground wire terminals.
\\n
\\n
Internal Passages and Lateral Cutouts: Symmetrical conduit pass-through openings and lateral edge reliefs are machined through the sidewalls to facilitate smooth, concealed routing of vacuum suction lines, water conduits, fiber-optic illuminator cabling, and electronic communication buses.
\\n
\\n
Cushion Mounting Interfaces: Perimeter mounting pads are face-milled to establish uniform seating lands for the quick-mount attachment of ergonomic upholstery and lumbar support components.
\\n

\\n

Phase C: Dual-Action (DA) Mechanical Surface Conditioning

\\n

Phase D: Precision Masking and Surface Decontamination

\\n

Phase E: Medical-Grade Protective Coating Application

\\n

4. Quality Assurance, Regulatory Compliance, and Metrology

\\n

Quality control protocols are tightly woven into every stage of the manufacturing sequence:

\\n

\\n
Coordinate Measuring Metrology (CMM): First-article castings and production lots are validated on advanced Coordinate Measuring Machines to verify multi-axis datums, pivot bore true-position alignment, boss coplanarity, and thread location accuracy.
\\n
\\n
Thread Engagement Inspection: All internal tapped holes are verified with calibrated thread plug gauges after coating removal to ensure effortless assembly and thread integrity without paint contamination.
\\n
\\n
Coating Adhesion and Chemical Durability: Coated surfaces undergo cross-hatch tape adhesion testing and chemical wipe testing. The resilient snow-white coating demonstrates resistance to hospital-grade disinfectants, medical rubbing alcohols, quaternary ammonium wipes, and sodium hypochlorite sanitizing agents, retaining its color fidelity, gloss level, and surface integrity without softening, yellowing, or peeling.
\\n

\\n

5. Medical Operatory Applications and Operational Value

\\n

The backrest assembly is deployed as a core structural element in premium dental operatory treatment centers, pediatric examination units, and specialized oral maxillofacial surgical suites:

\\n

\\n
Kinematic Smoothness and Recline Stability: The precision-bored dual hinge ears integrate smoothly with hydraulic tilt cylinders and synchronized dual-spindle linear actuators, delivering gentle, silent angular recline motions from upright patient consultation to full supine surgical positioning.
\\n
\\n
Concealed Utility Distribution: Integrated lateral access ports and deep internal casting channels protect delicate pneumatic tubing, clean water delivery lines, and high-frequency digital sensor wiring, shielding them from mechanical abrasion or accidental pinching.
\\n
\\n
Aseptic Maintenance and Ergonomics: The continuous, non-porous exterior coating allows clinical staff to perform rapid, effective disinfection between patient appointments. Its sleek, radiused contours prevent dirt accumulation, enhancing clinic hygiene while providing dentists and dental assistants with comfortable, close-proximity patient access during delicate restorative procedures.
\\n

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}","url":"https://www.cncliq.com/product/dental-chair-backrest"}]},{"@context":"https://schema.org","@type":"BreadcrumbList","@id":"https://www.cncliq.com/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate","@type":"WebPageElement","name":"Medical-Grade Dental Chair Structural Articulation & Base Plate","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Positioning

\\n

2. Premium Engineering Materials & Metallurgical Properties

\\n

2.1 A356-T6 / A365-T6 Cast Aluminum Alloy Matrix

\\n

\\n
Alloy Purity & Casting Integrity: The aluminum-silicon-magnesium composition provides dense, defect-free metal consolidation during the casting process, preventing common microstructural flaws such as internal shrinkage cavities, gas inclusions, and porosity.
\\n
\\n
T6 Heat Treatment Regimen: Following the casting operation, the component undergoes a complete solution heat treatment followed by precision artificial aging (T6 temper). This metallurgical transformation homogenizes the solid solution and forms densely distributed precipitate hardening phases throughout the crystalline lattice, maximizing yield strength, tensile toughness, and fatigue resistance under high cyclic dynamic loading.
\\n

\\n

2.2 Structural Topology Optimization & Rib Reinforcement

\\n

Unlike standard flat plates that suffer from flexural distortion under offset patient loads, this chair plate incorporates an advanced reverse-side radial stiffener matrix:

\\n

\\n
Radial Load Dispersion Ribs: A web of structural reinforcement ribs radiates outward from the central load-bearing hub to the peripheral mounting ears. This architectural layout channels multidirectional bending and torsional moments away from the center, effectively distributing mechanical stress throughout the entire perimeter.
\\n
\\n
Targeted Material Distribution: High-stress zones feature reinforced localized wall thickness, while non-load-bearing regions are sculpted to minimize unnecessary weight. This optimization ensures a minimum nominal wall thickness across thin-gauge sections without sacrificing structural stiffness, keeping the overall assembly lightweight and easy to manipulate during factory integration.
\\n

\\n

3. Precision Manufacturing & Advanced Processing Workflow

\\n

The manufacturing lifecycle of the dental chair plate reflects a tightly controlled sequence of metallurgical, mechanical, and surface engineering processes:

\\n

3.1 Casting, Forming & Thermal Stress Relief

\\n

\\n
The initial rough casting is formed in precision permanent molds to achieve consistent dimensional profiles and smooth raw surface contours.
\\n
\\n
Post-casting thermal annealing and structural straightening eliminate residual internal stresses accumulated during solidification, preventing post-machining warping or dimensional relaxation over years of active clinic operation.
\\n

\\n

3.2 Multi-Axis CNC Precision Machining

\\n

Following casting qualification, the component transitions to state-of-the-art multi-axis CNC machining centers for single-setup geometric refinement:

\\n

\\n
Central Pivot Bore & Bearing Race: The large circular central aperture and its concentric locating counterbore are high-speed turned and milled to exacting tolerances, providing seamless seating for central rotary bearings, slew rings, and pivotal articulation shafts.
\\n
\\n
Machined Pad Coplanarity & Flatness: All peripheral and central mounting pads are machined in coordinated reference passes. Total flatness across all functional contact pads is inspected against tight geometric tolerance bands, eliminating assembly bind, uneven bolt preload, and rocking when bolted to the patient chair frame.
\\n
\\n
Complex Threaded Hole Arrays: The plate features a series of multi-standard fastener points tailored for diverse interface requirements:
\\n
- \\n
  Six radial mounting positions arranged in an equidistant 60-degree circular bolt pattern with 1/4-20 UNC-2B internal threads for secure anchoring to the primary chassis.
  \\n
- \\n
  Secondary mounting points with 10-32 UNF-2B tapped holes (including through-hole and controlled-depth blind configurations designed with specific clearances to ensure no breakthrough on aesthetic exterior faces).
  \\n
- \\n
  Micro-fastener points featuring M3 metric threads for mounting internal sensor brackets and position limit switches.
  \\n
\\n

\\n

3.3 Cable Routing & Pass-Through Windows

\\n

Modern dental chairs route extensive arrays of pneumatic supply lines, high-pressure water feeds, surgical suction tubes, and digital sensor buses through the articulation core:

\\n

\\n
The plate integrates dedicated wiring clearance channels and smooth pass-through apertures.
\\n
\\n
All routing edges and slot transitions undergo dedicated automated and manual deburring, resulting in continuous rounded radii (such as R3.3 blends) that completely eliminate burrs and sharp edges, preventing abrasion or pinching of flexible utility lines during chair elevation and recline cycles.
\\n

\\n

3.4 Medical-Grade \\\"Gray Granite\\\" Powder Coating & Selective Masking

\\n

The exterior surface of the plate is protected by an industrial-grade architectural powder coat finish:

\\n

\\n
Surface Preparation: The unmasked cast exterior undergoes thorough solvent degreasing and surface conditioning to ensure maximum chemical and physical bonding of the polymer coating.
\\n
\\n
Specialized Color & Texture Formulation: The coating is formulated in an elegant \\\"Gray Granite\\\" textured finish (PTUS37AS19 by Powder Technology, Inc.). This micro-textured finish provides high tactile quality, eliminates specular glare under dental operating lights, and hides superficial scratches.
\\n
\\n
Precision Film Thickness: The coating application is maintained within a strict 1 to 3 mil thickness envelope, achieving complete, uniform coverage while preventing excessive buildup that could lead to edge chipping or flaking.
\\n
\\n
Comprehensive Thread & Interface Masking: Before entering the electrostatic spray booth, all functional tapped holes (1/4-20, 10-32, M3), central bearing fits, and critical datum surfaces are sealed with custom thermal masking plugs and tapes. This guarantees that all machined interfaces remain free of paint overspray, maintaining zero-clearance mechanical fits during assembly.
\\n

\\n

4. Application Scenarios & System-Level Integration

\\n

The chair plate is purpose-built for diverse clinical environments where structural dependability and hygienic integrity are paramount:

\\n

\\n
Next-Generation Dental Treatment Consoles:
\\n
- \\n
  Functions as the core horizontal support interface between the bottom scissor-lift elevation column and the motorized backrest/seat articulation sub-frame.
  \\n
\\n
\\n
Specialized Oral & Maxillofacial Surgical Chairs:
\\n
- \\n
  Delivers absolute structural rigidity during intricate microsurgery, dental implant placements, and prolonged endodontic treatments where any mechanical wobble, vibration, or drift would compromise surgical precision.
  \\n
\\n
\\n
High-Throughput Clinical Environments:
\\n
- \\n
  Built to endure the demanding operational tempo of hospital dental wards and high-volume outpatient clinics, handling continuous adjustments for hundreds of patients daily without structural fatigue or joint loosening.
  \\n
\\n
\\n
Intense Disinfection & Sanitization Regimes:
\\n
- \\n
  Resists routine wipe-downs with harsh quaternary ammonium compounds, alcohol-based solutions, and chlorine-based surface disinfectants without discoloration, bubbling, or degradation of the protective finish.
  \\n
\\n

\\n

5. Quality Inspection Protocols & Metrology

\\n

To ensure zero-defect delivery for critical medical equipment, each production batch adheres to an exhaustive Quality Assurance (QA) and In-Process Quality Control (IPQC) framework:

\\n

\\n
First Article & In-Process Inspection: Dimensional verification is executed at regular production intervals using calibrated vernier height gages, digital calipers, depth micrometers, and thread go/no-go plug gages.
\\n
\\n
Comprehensive Go/No-Go Fixturing: Complex hole-pattern relationships, locating dowel positions, and slot geometries are cross-checked using dedicated hard inspection tooling to guarantee 100% plug-and-play assembly line compatibility.
\\n
\\n
Visual & Surface Quality Control: Coated surfaces are inspected under standardized diffuse lighting to verify color uniformity, texture consistency, and the complete absence of runs, sags, pinholes, or particulate contamination.
\\n

\\n

6. Key Product Advantages & Engineering Highlights

\\n

\\n
Optimized Rigidity-to-Weight Performance: The A356-T6 aluminum construction backed by radial ribbing provides the structural stiffness of heavy cast iron at a fraction of the weight, reducing the mechanical burden and energy draw on chair elevation motors.
\\n
\\n
Zero-Backlash Mechanical Alignment: Precision CNC-machined reference surfaces and balanced fastener layouts prevent mechanical play and squeaking, ensuring smooth, silent recline and elevation motions that maximize patient comfort.
\\n
\\n
Superior Environmental & Chemical Resilience: The specialized Gray Granite powder coating offers outstanding barrier protection against moisture, physiological fluids, and hospital-grade sanitizers, preventing galvanic corrosion and surface oxidation.
\\n
\\n
Ergonomic Safety & Cable Longevity: Fully deburred cable channels with generous transition radii eliminate the risk of severed signal lines or fluid leaks, protecting both the machine’s internal systems and clinical technicians during routine maintenance.
\\n

\\n

7. Commercial Value & OEM Benefits

\\n

Partnering with a proven manufacturing process for this critical dental chair plate delivers substantial strategic value to dental equipment OEMs:

\\n

\\n
Accelerated Assembly Line Throughput: High dimensional repeatability and pristine, pre-masked threaded connections eliminate on-site re-tapping, shimming, or fitting modifications, drastically cutting assembly cycle times.
\\n
\\n
Drastic Reduction in Warranty Claims: The high fatigue resistance of heat-treated aluminum and durable powder finish minimize service calls related to structural sagging, fastener stripping, or cosmetic wear over a decade-long product service life.
\\n
\\n
Enhanced Brand Prestige: The refined granite-texture aesthetic and ultra-smooth mechanical performance reinforce the dental brand's reputation for premium quality, safety, and modern ergonomic design in global healthcare markets.
\\n
\\n
Full Medical Regulatory Compliance: Standardized process inspection records, material traceability, and non-toxic, RoHS-compliant surface finishes simplify customer submissions for international medical device certifications, including CE, FDA, and ISO 13485 audits.
\\n

\\n

FAQ

\\n

Q1: Will the coating peel or corrode with frequent use of medical disinfectants?

\\n

Q2: Do threaded holes and mating surfaces require secondary cleaning or re-tapping during OEM assembly?

\\n

Q3: Will internal fluid lines and electrical wiring suffer edge abrasion during frequent chair adjustments?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Architecture Overview

\\n

2. Material Engineering & Metallurgical Architecture

\\n

3. Precision Multi-Axis Machining & Dimensional Tolerancing

\\n

4. Surface Finishing, Masking Protocols & Quality Assurance

\\n

\\n
All threaded apertures (including 1/4-20 UNC and 10-32 UNF) are masked against powder ingress;
\\n
\\n
Precision 0.501 inch and 0.502 inch reamed pin bores are 100% masked on all interior mating surfaces;
\\n
\\n
0.625 inch pivot bores across both feet are masked on all interior faces;
\\n
\\n
Controlled overspray is selectively permitted across designated non-functional interior casting surfaces to optimize coating cycle efficiency without compromising structural fits.
\\n

\\n

5. Clinical Ergonomics & Operational Application Scenarios

\\n

In modern clinical practice, dental treatment chairs must accommodate an extraordinarily diverse demographic while providing flawless stability during delicate microscopic procedures:

\\n

\\n
General Restorative Dentistry & Prophylaxis: The leg support maintains synchronized, vibration-free angular adjustment during routine chair elevation, Trendelenburg tilting, and return-to-exit movements. It provides rigid knee and lower-calf stabilization that alleviates lumbar spinal tension in seated patients, facilitating ergonomic positioning for dentists and hygienists during extended treatment sessions.
\\n
\\n
Oral & Maxillofacial Surgery and Dental Implantology: During prolonged surgical interventions exceeding 120 to 180 minutes, any mechanical deflection or microscopic backlash under patient weight creates visual disruption under high-magnification surgical loupes and operating microscopes. The component provides a rock-solid structural foundation with zero discernible flexure under concentrated lower-body loads.
\\n
\\n
Pediatric, Bariatric & Geriatric Patient Care: Engineered with a conservative structural safety factor exceeding 4.0, the leg support effortlessly accommodates bariatric patient capacities up to 250 kg (550 lbs) dynamic load and over 800 kg static load without plastic deformation, while its smooth contour profile prevents soft-tissue pinching during automated leg-rest retraction.
\\n

\\n

6. Engineering Advantages & Comparative Value Matrix

\\n

The 113-015-025-H leg support establishes a benchmark in dental structural engineering through five distinct architectural pillars:

\\n

\\n
High Specific Rigidity & Vibration Damping: The A356-T6 alloy matrix attenuates high-frequency harmonics generated by hydraulic actuators and electric spindle motors, eliminating tactile vibration transfer to the patient.
\\n
\\n
Micro-Inch Kinematic Precision: Tight bilateral reamed tolerances (+0.001/-0.000 in / ±0.025 mm) eliminate mechanical hysteresis and wobbling throughout 100,000+ articulation cycles, guaranteeing smooth, silent motion.
\\n
\\n
Full Surface Passivation & Infection Control: Chemical-resistant powder coating prevents oxidative pitting and galvanic corrosion even under intensive daily wiping protocols mandated by ISO 13485 medical cleaning standards.
\\n
\\n
Reduced Actuator Load: The optimized topological casting geometry lowers total assembly weight by 42% compared to traditional ductile iron or welded steel brackets, extending the operational lifespan of chair lifting motors and hydraulic seals.
\\n
\\n
Total Life-Cycle Economy: By eliminating field fatigue fractures, bushing misalignment, and surface degradation, the component dramatically lowers the Total Cost of Ownership (TCO) for dental equipment OEMs and clinical end-users.
\\n

\\n

FAQ

\\n

Q1: Why is A356-T6 cast aluminum used instead of traditional cast iron or welded steel?

\\n

Q2: Why is 100% masking strictly required for pin bores (0.502/0.625\\\") and threaded holes prior to painting?

\\n

Q3: Why does the blueprint explicitly mandate \\\"Minimize hand grinding near detent groove\\\"?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Product Identification and Architectural Role

\\n

                     +---------------------------------------+\\n                     |    1. Primary Ingot & Alloy Smelt     |\\n                     |       (Medical-Grade Cast Alloy)      |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    2. Permanent Mold Gravity Casting  |\\n                     |     (Integrally Cast Ribs & Bosses)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    3. T6 Solution & Aging Treatment   |\\n                     |     (High Yield & Fatigue Strength)   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    4. Multi-Axis Precision CNC Machining\\n                     |       - Pivot Ears In-line Bores      |\\n                     |       - Multi-Thread Drilling/Tapping |\\n                     |       - Routing Cutouts & Spotfaces   |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    5. Dual-Action (DA) Orbital Sanding|\\n                     |     (Deburring, Edge Radiusing R0.5)  |\\n                     +---------------------------------------+\\n                                         |\\n                                         v\\n                     +---------------------------------------+\\n                     |    6. Masking & Snow White Coating    |\\n                     |     (Medical Spec & Color Standard)   |\\n                     +---------------------------------------+\\n

\\n

2. Material Science and Structural Metallurgy

\\n

3. Comprehensive Manufacturing Lifecycle and Processing Flow

\\n

The production methodology follows a rigorous, multi-stage medical manufacturing protocol designed to ensure dimensional repeatability, geometric precision, and aesthetic presentation:

\\n

Phase A: Permanent Mold Precision Casting

\\n

Phase B: Advanced Multi-Axis CNC Precision Machining

\\n

Following thermal treatment, the raw casting undergoes multi-axis CNC milling, precision boring, and automated tapping operations:

\\n

\\n
Coaxial Articulation Pivot Bores: The heavy-duty lower hinge ears are bored in a single coordinated machining setup using dedicated line-boring tooling. This process achieves true coaxial alignment from side to side, ensuring smooth, friction-free rotational coupling with the primary drive pins and eliminating mechanical binding during backrest recline.
\\n
\\n
Specialized Fastener Matrix: High-speed milling spindles generate multiple groups of fine and coarse internal threads, counterbored clearance holes, and precision spotfaces across the casting. These threaded groupings accommodate structural tie-bars, motor drive brackets, side armrest mounts, sensory feedback modules, and internal ground wire terminals.
\\n
\\n
Internal Passages and Lateral Cutouts: Symmetrical conduit pass-through openings and lateral edge reliefs are machined through the sidewalls to facilitate smooth, concealed routing of vacuum suction lines, water conduits, fiber-optic illuminator cabling, and electronic communication buses.
\\n
\\n
Cushion Mounting Interfaces: Perimeter mounting pads are face-milled to establish uniform seating lands for the quick-mount attachment of ergonomic upholstery and lumbar support components.
\\n

\\n

Phase C: Dual-Action (DA) Mechanical Surface Conditioning

\\n

Phase D: Precision Masking and Surface Decontamination

\\n

Phase E: Medical-Grade Protective Coating Application

\\n

4. Quality Assurance, Regulatory Compliance, and Metrology

\\n

Quality control protocols are tightly woven into every stage of the manufacturing sequence:

\\n

\\n
Coordinate Measuring Metrology (CMM): First-article castings and production lots are validated on advanced Coordinate Measuring Machines to verify multi-axis datums, pivot bore true-position alignment, boss coplanarity, and thread location accuracy.
\\n
\\n
Thread Engagement Inspection: All internal tapped holes are verified with calibrated thread plug gauges after coating removal to ensure effortless assembly and thread integrity without paint contamination.
\\n
\\n
Coating Adhesion and Chemical Durability: Coated surfaces undergo cross-hatch tape adhesion testing and chemical wipe testing. The resilient snow-white coating demonstrates resistance to hospital-grade disinfectants, medical rubbing alcohols, quaternary ammonium wipes, and sodium hypochlorite sanitizing agents, retaining its color fidelity, gloss level, and surface integrity without softening, yellowing, or peeling.
\\n

\\n

5. Medical Operatory Applications and Operational Value

\\n

The backrest assembly is deployed as a core structural element in premium dental operatory treatment centers, pediatric examination units, and specialized oral maxillofacial surgical suites:

\\n

\\n
Kinematic Smoothness and Recline Stability: The precision-bored dual hinge ears integrate smoothly with hydraulic tilt cylinders and synchronized dual-spindle linear actuators, delivering gentle, silent angular recline motions from upright patient consultation to full supine surgical positioning.
\\n
\\n
Concealed Utility Distribution: Integrated lateral access ports and deep internal casting channels protect delicate pneumatic tubing, clean water delivery lines, and high-frequency digital sensor wiring, shielding them from mechanical abrasion or accidental pinching.
\\n
\\n
Aseptic Maintenance and Ergonomics: The continuous, non-porous exterior coating allows clinical staff to perform rapid, effective disinfection between patient appointments. Its sleek, radiused contours prevent dirt accumulation, enhancing clinic hygiene while providing dentists and dental assistants with comfortable, close-proximity patient access during delicate restorative procedures.
\\n

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}"}}]},{"@context":"https://schema.org","@type":"Product","@id":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate#product","name":"Medical-Grade Dental Chair Structural Articulation & Base Plate","description":"{\"blocks\": [{\"data\": {\"text\": \"

Product Description

\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc.\\n \\nStainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416\\n \\nSteel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc.\\n \\nAlloy steel (15Cr, 20Cr, 42CrMo), etc.\\n \\nBrass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc.\\n \\nCopper, bronze, copper, etc.\\n \\nTitanium: TC4 (TiAl6v4, Grade f5)\\n \\nPlastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc.
process	CNC machining, turning, milling, stamping, turning, cutting, etc.
Delivery time	Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval.
Surface treatment	Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting
Test equipment	Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer.
Quality Management System	ISO 9001:2015\\n \\nIATF 16949:2016\\n \\nISO 13485:2016
application	Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment.
File Format	Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS
Package	Inner plastic bag, outer standard carton, or as per customer's requirements
Shipping	Sea freight, air freight, international express (DHL, FedEx, TNT, UPS).
Serve	The professional foreign trade team provides enthusiastic and fast response services.\\n \\nDimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing\\n \\nRoHS report/Salt spray test report/Hardness test report

\\n

1. Executive Summary & Product Positioning

\\n

2. Premium Engineering Materials & Metallurgical Properties

\\n

2.1 A356-T6 / A365-T6 Cast Aluminum Alloy Matrix

\\n

\\n
Alloy Purity & Casting Integrity: The aluminum-silicon-magnesium composition provides dense, defect-free metal consolidation during the casting process, preventing common microstructural flaws such as internal shrinkage cavities, gas inclusions, and porosity.
\\n
\\n
T6 Heat Treatment Regimen: Following the casting operation, the component undergoes a complete solution heat treatment followed by precision artificial aging (T6 temper). This metallurgical transformation homogenizes the solid solution and forms densely distributed precipitate hardening phases throughout the crystalline lattice, maximizing yield strength, tensile toughness, and fatigue resistance under high cyclic dynamic loading.
\\n

\\n

2.2 Structural Topology Optimization & Rib Reinforcement

\\n

Unlike standard flat plates that suffer from flexural distortion under offset patient loads, this chair plate incorporates an advanced reverse-side radial stiffener matrix:

\\n

\\n
Radial Load Dispersion Ribs: A web of structural reinforcement ribs radiates outward from the central load-bearing hub to the peripheral mounting ears. This architectural layout channels multidirectional bending and torsional moments away from the center, effectively distributing mechanical stress throughout the entire perimeter.
\\n
\\n
Targeted Material Distribution: High-stress zones feature reinforced localized wall thickness, while non-load-bearing regions are sculpted to minimize unnecessary weight. This optimization ensures a minimum nominal wall thickness across thin-gauge sections without sacrificing structural stiffness, keeping the overall assembly lightweight and easy to manipulate during factory integration.
\\n

\\n

3. Precision Manufacturing & Advanced Processing Workflow

\\n

The manufacturing lifecycle of the dental chair plate reflects a tightly controlled sequence of metallurgical, mechanical, and surface engineering processes:

\\n

3.1 Casting, Forming & Thermal Stress Relief

\\n

\\n
The initial rough casting is formed in precision permanent molds to achieve consistent dimensional profiles and smooth raw surface contours.
\\n
\\n
Post-casting thermal annealing and structural straightening eliminate residual internal stresses accumulated during solidification, preventing post-machining warping or dimensional relaxation over years of active clinic operation.
\\n

\\n

3.2 Multi-Axis CNC Precision Machining

\\n

Following casting qualification, the component transitions to state-of-the-art multi-axis CNC machining centers for single-setup geometric refinement:

\\n

\\n
Central Pivot Bore & Bearing Race: The large circular central aperture and its concentric locating counterbore are high-speed turned and milled to exacting tolerances, providing seamless seating for central rotary bearings, slew rings, and pivotal articulation shafts.
\\n
\\n
Machined Pad Coplanarity & Flatness: All peripheral and central mounting pads are machined in coordinated reference passes. Total flatness across all functional contact pads is inspected against tight geometric tolerance bands, eliminating assembly bind, uneven bolt preload, and rocking when bolted to the patient chair frame.
\\n
\\n
Complex Threaded Hole Arrays: The plate features a series of multi-standard fastener points tailored for diverse interface requirements:
\\n
- \\n
  Six radial mounting positions arranged in an equidistant 60-degree circular bolt pattern with 1/4-20 UNC-2B internal threads for secure anchoring to the primary chassis.
  \\n
- \\n
  Secondary mounting points with 10-32 UNF-2B tapped holes (including through-hole and controlled-depth blind configurations designed with specific clearances to ensure no breakthrough on aesthetic exterior faces).
  \\n
- \\n
  Micro-fastener points featuring M3 metric threads for mounting internal sensor brackets and position limit switches.
  \\n
\\n

\\n

3.3 Cable Routing & Pass-Through Windows

\\n

Modern dental chairs route extensive arrays of pneumatic supply lines, high-pressure water feeds, surgical suction tubes, and digital sensor buses through the articulation core:

\\n

\\n
The plate integrates dedicated wiring clearance channels and smooth pass-through apertures.
\\n
\\n
All routing edges and slot transitions undergo dedicated automated and manual deburring, resulting in continuous rounded radii (such as R3.3 blends) that completely eliminate burrs and sharp edges, preventing abrasion or pinching of flexible utility lines during chair elevation and recline cycles.
\\n

\\n

3.4 Medical-Grade \\\"Gray Granite\\\" Powder Coating & Selective Masking

\\n

The exterior surface of the plate is protected by an industrial-grade architectural powder coat finish:

\\n

\\n
Surface Preparation: The unmasked cast exterior undergoes thorough solvent degreasing and surface conditioning to ensure maximum chemical and physical bonding of the polymer coating.
\\n
\\n
Specialized Color & Texture Formulation: The coating is formulated in an elegant \\\"Gray Granite\\\" textured finish (PTUS37AS19 by Powder Technology, Inc.). This micro-textured finish provides high tactile quality, eliminates specular glare under dental operating lights, and hides superficial scratches.
\\n
\\n
Precision Film Thickness: The coating application is maintained within a strict 1 to 3 mil thickness envelope, achieving complete, uniform coverage while preventing excessive buildup that could lead to edge chipping or flaking.
\\n
\\n
Comprehensive Thread & Interface Masking: Before entering the electrostatic spray booth, all functional tapped holes (1/4-20, 10-32, M3), central bearing fits, and critical datum surfaces are sealed with custom thermal masking plugs and tapes. This guarantees that all machined interfaces remain free of paint overspray, maintaining zero-clearance mechanical fits during assembly.
\\n

\\n

4. Application Scenarios & System-Level Integration

\\n

The chair plate is purpose-built for diverse clinical environments where structural dependability and hygienic integrity are paramount:

\\n

\\n
Next-Generation Dental Treatment Consoles:
\\n
- \\n
  Functions as the core horizontal support interface between the bottom scissor-lift elevation column and the motorized backrest/seat articulation sub-frame.
  \\n
\\n
\\n
Specialized Oral & Maxillofacial Surgical Chairs:
\\n
- \\n
  Delivers absolute structural rigidity during intricate microsurgery, dental implant placements, and prolonged endodontic treatments where any mechanical wobble, vibration, or drift would compromise surgical precision.
  \\n
\\n
\\n
High-Throughput Clinical Environments:
\\n
- \\n
  Built to endure the demanding operational tempo of hospital dental wards and high-volume outpatient clinics, handling continuous adjustments for hundreds of patients daily without structural fatigue or joint loosening.
  \\n
\\n
\\n
Intense Disinfection & Sanitization Regimes:
\\n
- \\n
  Resists routine wipe-downs with harsh quaternary ammonium compounds, alcohol-based solutions, and chlorine-based surface disinfectants without discoloration, bubbling, or degradation of the protective finish.
  \\n
\\n

\\n

5. Quality Inspection Protocols & Metrology

\\n

To ensure zero-defect delivery for critical medical equipment, each production batch adheres to an exhaustive Quality Assurance (QA) and In-Process Quality Control (IPQC) framework:

\\n

\\n
First Article & In-Process Inspection: Dimensional verification is executed at regular production intervals using calibrated vernier height gages, digital calipers, depth micrometers, and thread go/no-go plug gages.
\\n
\\n
Comprehensive Go/No-Go Fixturing: Complex hole-pattern relationships, locating dowel positions, and slot geometries are cross-checked using dedicated hard inspection tooling to guarantee 100% plug-and-play assembly line compatibility.
\\n
\\n
Visual & Surface Quality Control: Coated surfaces are inspected under standardized diffuse lighting to verify color uniformity, texture consistency, and the complete absence of runs, sags, pinholes, or particulate contamination.
\\n

\\n

6. Key Product Advantages & Engineering Highlights

\\n

\\n
Optimized Rigidity-to-Weight Performance: The A356-T6 aluminum construction backed by radial ribbing provides the structural stiffness of heavy cast iron at a fraction of the weight, reducing the mechanical burden and energy draw on chair elevation motors.
\\n
\\n
Zero-Backlash Mechanical Alignment: Precision CNC-machined reference surfaces and balanced fastener layouts prevent mechanical play and squeaking, ensuring smooth, silent recline and elevation motions that maximize patient comfort.
\\n
\\n
Superior Environmental & Chemical Resilience: The specialized Gray Granite powder coating offers outstanding barrier protection against moisture, physiological fluids, and hospital-grade sanitizers, preventing galvanic corrosion and surface oxidation.
\\n
\\n
Ergonomic Safety & Cable Longevity: Fully deburred cable channels with generous transition radii eliminate the risk of severed signal lines or fluid leaks, protecting both the machine’s internal systems and clinical technicians during routine maintenance.
\\n

\\n

7. Commercial Value & OEM Benefits

\\n

Partnering with a proven manufacturing process for this critical dental chair plate delivers substantial strategic value to dental equipment OEMs:

\\n

\\n
Accelerated Assembly Line Throughput: High dimensional repeatability and pristine, pre-masked threaded connections eliminate on-site re-tapping, shimming, or fitting modifications, drastically cutting assembly cycle times.
\\n
\\n
Drastic Reduction in Warranty Claims: The high fatigue resistance of heat-treated aluminum and durable powder finish minimize service calls related to structural sagging, fastener stripping, or cosmetic wear over a decade-long product service life.
\\n
\\n
Enhanced Brand Prestige: The refined granite-texture aesthetic and ultra-smooth mechanical performance reinforce the dental brand's reputation for premium quality, safety, and modern ergonomic design in global healthcare markets.
\\n
\\n
Full Medical Regulatory Compliance: Standardized process inspection records, material traceability, and non-toxic, RoHS-compliant surface finishes simplify customer submissions for international medical device certifications, including CE, FDA, and ISO 13485 audits.
\\n

\\n

FAQ

\\n

Q1: Will the coating peel or corrode with frequent use of medical disinfectants?

\\n

Q2: Do threaded holes and mating surfaces require secondary cleaning or re-tapping during OEM assembly?

\\n

Q3: Will internal fluid lines and electrical wiring suffer edge abrasion during frequent chair adjustments?

\\n

Our Core Advantages

\\n

Specialized process solutions for medical mechanical parts, fully familiar with strict medical standards on cleanliness, corrosion resistance and burr-free surfaces. Support compliant custom processing for medical device manufacturers.
Full in-house clean manufacturing including milling, tapping, cleaning and powder coating without outsourcing, shortening lead time for prototypes & mass orders.
Complete precision testing equipment including CMM, thread gauges, film thickness meters & salt spray testers. Full sets of dimensional, salt spray and cleanliness reports can be supplied.
One-stop customization: drawing optimization, material replacement, clean process adjustment & fast prototype sampling, matching small-batch & repeated orders of medium & small medical equipment factories.

\\n

TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp\\uff1a+86 187 5714 8656
Website:https://www.cncliq.com/

\"}, \"type\": \"paragraph\"}, {\"data\": {\"text\": \"\"}, \"type\": \"paragraph\"}]}","image":"https://www.cncliq.com/image/img/logo.png","url":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate","brand":{"@type":"Brand","name":"NingboLiqin"},"offers":{"@type":"Offer","url":"https://www.cncliq.com/product/medical-grade-dental-chair-structural-articulation-base-plate","priceCurrency":"USD","price":"51.00","availability":"https://schema.org/InStock","itemCondition":"https://schema.org/NewCondition","seller":{"@type":"Organization","name":"NingboLiqin","url":"https://www.cncliq.com","logo":"https://www.cncliq.com/image/img/logo.png"},"shippingDetails":{"@type":"OfferShippingDetails","shippingRate":{"@type":"MonetaryAmount","value":0,"currency":"USD"},"shippingDestination":{"@type":"DefinedRegion","addressCountry":["US","GB","DE","AU","CA","CN"]},"deliveryTime":{"@type":"ShippingDeliveryTime","handlingTime":{"@type":"QuantitativeValue","minValue":7,"maxValue":14,"unitCode":"DAY"},"transitTime":{"@type":"QuantitativeValue","minValue":7,"maxValue":14,"unitCode":"DAY"}}},"hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","applicableCountry":["US","GB","DE","AU","CA","CN"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":10,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn"}},"aggregateRating":{"@type":"AggregateRating","ratingValue":"4.9","reviewCount":"128","bestRating":"5","worstRating":"1"},"review":[{"@type":"Review","author":{"@type":"Organization","name":"NingboLiqin"},"reviewBody":"Liqin Manufacturing delivered custom CNC machined aluminum and stainless steel components with consistent tolerances, smooth surface finishes, and clear communication from quote to delivery. Their precision metal manufacturing support helped our engineering team shorten prototyping time and move confidently into small-batch production.","datePublished":"2025-01-06","name":"Reliable CNC Machining Partner for Precision Metal Parts","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}},{"@type":"Review","author":{"@type":"Organization","name":"Smart Terminal Technology Manufacturer"},"reviewBody":"We needed durable non-standard metal parts for smart terminal equipment, and Liqin provided practical DFM feedback, stable CNC machining quality, and dependable inspection reports. The finished components fit our assembly requirements well and supported a smoother product launch.","datePublished":"2025-01-18","name":"High-Quality Custom Metal Components for Smart Devices","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}},{"@type":"Review","author":{"@type":"Organization","name":"Industrial Robot Equipment Factory"},"reviewBody":"For our industrial robot equipment, Liqin produced precision turned parts and machined metal components with excellent repeatability across batches. Their experience with copper, aluminum, and stainless steel manufacturing made them a valuable supplier for automation hardware.","datePublished":"2025-02-07","name":"Precision Parts Supplier for Industrial Automation Projects","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}},{"@type":"Review","author":{"@type":"Organization","name":"Low-temperature Cold Storage Equipment Company"},"reviewBody":"Liqin helped us source custom metal parts for low-temperature cold storage systems where strength, corrosion resistance, and dimensional accuracy were critical. Their quality control process and responsive project communication gave us confidence in long-term cooperation.","datePublished":"2025-02-14","name":"Consistent Metal Processing Quality for Cold Storage Equipment","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}},{"@type":"Review","author":{"@type":"Organization","name":"Telecommunication Equipment Group"},"reviewBody":"Our telecommunication equipment project required precision metal fabrication, CNC machining, and reliable surface treatment support. Liqin Manufacturing provided stable quality, fast quotation responses, and well-packaged parts that met our international procurement standards.","datePublished":"2025-03-02","name":"Trusted Manufacturing Support for Telecommunication Equipment","reviewRating":{"@type":"Rating","ratingValue":"5","bestRating":"5","worstRating":"1"}}]},{"@context":"https://schema.org","@type":"LocalBusiness","@id":"https://www.cncliq.com/#localbusiness","name":"NingboLiqin","url":"https://www.cncliq.com","logo":"https://www.cncliq.com/image/img/logo.png","image":"https://www.cncliq.com/image/img/logo.png","email":"zhouli@chinaliqin.com","telephone":"+86 18757148656","address":{"@type":"PostalAddress","streetAddress":"NO.68ketaiRoad, JishigangTown, HaishuDistrict, NingboCity, Zhengjiang, Province,China ","addressLocality":"Ningbo","addressRegion":"Zhejiang","addressCountry":"CN","postalCode":"315177"},"geo":{"@type":"GeoCoordinates","latitude":29.8897,"longitude":121.4206},"hasMap":"https://www.google.com/maps?q=29.8897,121.4206","location":{"@type":"Place","@id":"https://www.cncliq.com/#place","name":"NingboLiqin Headquarters","address":{"@type":"PostalAddress","streetAddress":"NO.68ketaiRoad, JishigangTown, HaishuDistrict, NingboCity, Zhengjiang, Province,China ","addressLocality":"Ningbo","addressRegion":"Zhejiang","addressCountry":"CN","postalCode":"315177"},"geo":{"@type":"GeoCoordinates","latitude":29.8897,"longitude":121.4206},"hasMap":"https://www.google.com/maps?q=29.8897,121.4206"},"priceRange":"$$","sameAs":["https://www.facebook.com/","https://www.instagram.com/liqincnc/reels/","https://www.youtube.com/@liqinCNC/shorts","https://www.pinterest.com/","https://www.linkedin.com/","https://twitter.com/","https://www.tiktok.com/@liqincnc"]},{"@context":"https://schema.org","@type":"Place","@id":"https://www.cncliq.com/#place","name":"NingboLiqin Headquarters","description":"NO.68ketaiRoad, JishigangTown, HaishuDistrict, NingboCity, Zhengjiang, Province,China ","address":{"@type":"PostalAddress","streetAddress":"NO.68ketaiRoad, JishigangTown, HaishuDistrict, NingboCity, Zhengjiang, Province,China ","addressLocality":"Ningbo","addressRegion":"Zhejiang","addressCountry":"CN","postalCode":"315177"},"geo":{"@type":"GeoCoordinates","latitude":29.8897,"longitude":121.4206},"hasMap":"https://www.google.com/maps?q=29.8897,121.4206","containedInPlace":{"@type":"AdministrativeArea","name":"Haishu District","containedInPlace":{"@type":"AdministrativeArea","name":"Ningbo","containedInPlace":{"@type":"AdministrativeArea","name":"Zhejiang","containedInPlace":{"@type":"Country","name":"China"}}}}}]

Product List

Categories

Medical-Grade Dental Chair Structural Articulation & Base Plate

Medical Dental Chair Leg Support

Dental Chair Backrest

Dental Chair Armrest

Precision Aluminum Light Housing

High-Precision CNC Machined 304 Stainless Steel Custom Adapter / Fitting Component