Prosthetic Flange Locking T-Nut | Cold Extrusion & Anodizing

Label	Value
Material	customized
Drawing format	2D (PDF/CAD/DWG) and 3D (STEP/IGES/GLB)
Specification
Processing Precision	0.01mm
Production Capacity	500000/year
Process Usage
Surface Finish	Customized Finishing

Product Description

thing	describe
Design/Size	According to customer's drawings or samples
Material	Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc. Stainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416 Steel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc. Alloy steel (15Cr, 20Cr, 42CrMo), etc. Brass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc. Copper, bronze, copper, etc. Titanium: TC4 (TiAl6v4, Grade f5) Plastic: 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 IATF 16949:2016 ISO 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. Dimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing RoHS report/Salt spray test report/Hardness test report

Product Overview

Core Application

As a critical connecting component in the prosthetic flange system, it enables precise alignment and reliable locking between the prosthetic socket and joint modules. It directly determines the stability, walking safety and fitting accuracy of the prosthesis, serving as a key load-bearing custom part for prosthetics.

Material Properties

Made of aerospace-grade 7075-T651 high-strength aluminum alloy, featuring lightweight design, high fatigue resistance, excellent biocompatibility and corrosion resistance — fully compliant with the strict demands of long-term human-worn medical devices.

Structural & Functional Features

Integrated with central locking threaded holes, evenly distributed mounting holes, positioning through holes, arc transitions and micro-chamfered edge passivation. Balances assembly accuracy, locking reliability, installation convenience and operational safety.

Process & Compliance Standards

Complies with military-grade surface anodizing + special primer protection; full deburring and sharp edge passivation on all machined surfaces, meeting medical-grade corrosion resistance, wear resistance and burr-free safety specifications.

Customization Attributes

Exclusive non-standard design with no universal substitutes; manufactured strictly per 3D solid models to support personalized prosthetic fitting and assembly needs.

Integrated Manufacturing Process

We combine cold extrusion preforming with precision CNC machining to outperform traditional pure cutting in part strength and dimensional stability.

Material Selection & Pre-Treatment

Incoming inspection of mechanical properties and chemical composition of aerospace-grade 7075 aluminum alloy bars; straightening, precision cutting and surface descaling to ensure blank purity.
Precision Cold Extrusion Preforming (Core Process)

Custom carbide cold extrusion dies form aluminum blanks at room temperature to pre-shape basic contours, central hole prototypes and mounting hole rough forms.

Advantages: Continuous metal fiber for 30%+ higher strength & fatigue resistance; high forming precision with reduced cutting allowance; improved surface density for easier finishing.
Datum Setting & Rough Machining

Unified datum from cold-extruded blanks; CNC machining centers/turning machines for contour and hole roughing, with uniform finishing allowances.
High-Precision Semi-Finishing

Datum correction, threaded bottom hole machining, evenly distributed hole positioning, and pre-forming of arc transitions and chamfers.
Ultra-Precision Finish Machining

5-axis CNC simultaneous machining for precision central threads, through holes, evenly distributed mounting holes, theoretical datum surfaces and micro-chamfers; full-hole mechanical deburring and sharp edge passivation.
Medical-Grade Surface Treatment

Military-standard full-surface anodizing, followed by special primer coating to boost corrosion resistance, wear resistance and adhesion.
Full-Dimension Inspection & Clean Packaging

3D coordinate measuring machine (CMM) full inspection; verification of surface performance, assembly accuracy, burrs and sharp edges; medical-standard cleaning and sealed packaging.

Core Manufacturing Challenges

Cold Extrusion Dimensional Control

Springback and deformation of 7075 aluminum alloy during cold extrusion; blank deviations affect final assembly accuracy.
Cumulative Tolerance of Complex Structures

Strict position and concentricity requirements for central threads, multi-group evenly distributed holes and positioning holes; error accumulation from extrusion + cutting.
Medical-Grade Deburring & Edge Treatment

Micro burrs in deep/small-diameter holes; uniform sharp-edge passivation is critical for human safety.
High-Strength Aluminum Machining

Increased material density after cold extrusion leads to adhesion and chatter, reducing thread and hole surface quality.
Surface Treatment Consistency & Adhesion

Uniform anodizing coverage across extruded/machined surfaces; reliable primer bonding for medical-grade durability.
Non-Standard Datum Unification

Strict adherence to 3D solid models (no scale scaling); unified datum between cold extrusion and finishing.

Challenge Resolution Solutions

Cold Extrusion Precision Optimization

Custom carbide dies with springback compensation; constant-temperature extrusion environment with controlled force/speed; 100% blank inspection before downstream processes.
Closed-Loop Precision Control

Single clamping for full-process finishing to eliminate setup errors; in-line CMM inspection for real-time parameter correction.
Medical-Grade Burr & Edge Control

Triple process: mechanical honing + ultrasonic deburring + manual fine inspection; custom micro-chamfer tools for uniform passivation; 100% sharp-edge inspection.
High-Strength Aluminum Machining Adaptation

Aerospace aluminum dedicated coated tools; optimized cutting parameters for extruded dense material; high-efficiency cooling/lubrication to eliminate adhesion and chatter.
Surface Treatment Quality Assurance

Qualified medical-grade surface treatment suppliers; strict military-standard anodizing for uniform film formation; post-anodizing activation and constant-temperature primer application; batch adhesion testing.
Non-Standard Datum Consistency

3D solid model as the sole manufacturing datum (no scale scaling); first-article full-dimension validation + in-process batch inspection.

Custom Service & Customer Guarantees

Exclusive Process Advantage

Patented cold extrusion + precision CNC composite process for optimal strength, accuracy and efficiency.
Medical Manufacturing Compliance

Adheres to medical device component processing specifications; clean production with full traceability of materials, processes and inspections.
Flexible Production Capacity

Supports single-piece prototyping, small-batch trial production and mass production to meet custom prosthetic component demands.
Full-Process Quality Control

Dedicated QC checkpoints from material, cold extrusion, finishing to surface treatment and inspection; zero non-conforming parts released.
One-Stop Technical Support

Pre-production process evaluation, cold extrusion die design, sample validation and after-sales technical support.
Delivery & After-Sales Assurance

On-time delivery, medical-standard packaging, and post-sales dimensional rechecking + process optimization services.

Prosthetic Components

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

Prosthetic Flange Locking Liner T-Nut | Cold Extrusion & Anodizing

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