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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 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
This is a medical‑grade precision load‑bearing part designed for high‑load prosthetic flange systems. It serves as the core locking connection between prosthetic sockets and joint modules, directly ensuring the stability, load‑bearing performance and safety of prosthetic devices.
- Material: Manufactured from 7075‑T651 aerospace‑grade high‑strength aluminum alloy, offering lightweight performance, high fatigue resistance and excellent biocompatibility for medical wearable applications.
- Structure: Integrated with precision central locking threads, circumferentially evenly distributed mounting holes, large‑radius smooth transitions and full edge passivation, balancing assembly accuracy, locking reliability and user safety.
- Surface Treatment: Military‑spec full‑surface anodizing with specialized primer coating; full deburring and sharp edge passivation comply with medical‑grade safety requirements.
- Customization: Exclusive large‑radius non‑standard structure, produced strictly according to 3D solid models to match large‑size prosthetic flange assembly.
Manufacturing Process (Cold Extrusion + Precision CNC)
We adopt a cold extrusion preforming + high‑precision CNC finishing composite process, which delivers far higher strength and dimensional stability than traditional cutting, with full medical‑grade quality control throughout production.
- Material Preparation: Selection and inspection of aerospace aluminum bar stock, straightening, precision cutting and descaling to ensure blank purity.
- Precision Cold Extrusion (Core Process): Custom carbide dies form blanks at room temperature, pre‑shaping large‑radius contours, central holes and mounting holes, while retaining continuous metal fibers to greatly improve fatigue resistance.
- Rough Machining: Profile and hole system roughing based on extruded blanks, with uniform finishing allowances reserved.
- Semi‑Finishing: Datum correction, threaded bottom hole machining, positioning hole processing and large‑radius transition forming.
- Ultra‑Precision Finishing: 5‑axis CNC machining of threads, mounting holes, large‑radius arcs and micro‑chamfers; full‑hole deburring.
- Medical‑Grade Surface Treatment: Military‑spec anodizing and specialized primer coating to enhance surface protection and adhesion.
- Inspection & Packaging: Full‑dimensional CMM inspection, medical‑standard cleaning and sealed packaging.
Key Manufacturing Challenges
- Large‑radius cold extrusion is prone to material springback, making curved surface precision difficult to control.
- High precision requirements for thread and hole system positioning and concentricity, which directly affect prosthetic assembly.
- Medical‑grade deburring and edge passivation; deep and small holes easily retain burrs, and large‑radius edge treatment must be uniform.
- Extruded material has increased density, leading to tool adhesion and chatter during machining, reducing surface quality.
- Ensuring uniform anodizing and reliable primer adhesion on large curved surfaces.
- Datum inconsistency between extrusion and finishing processes can cause cumulative dimensional errors.
Challenge Resolution Solutions
- Cold Extrusion Precision Optimization: Custom dies with springback compensation, constant‑temperature extrusion parameter control, and 100% blank inspection.
- Closed‑Loop Precision Control: Single‑clamping full‑process machining combined with in‑line CMM inspection to eliminate assembly and cumulative errors.
- Burr & Edge Control: Triple process of mechanical honing, ultrasonic deburring and manual fine inspection; customized tools for uniform passivation.
- Machining Optimization: Aerospace aluminum dedicated coated cutting tools, matched cutting parameters for extruded materials, and high‑efficiency cooling to prevent adhesion and chatter.
- Surface Treatment Quality Control: Qualified medical‑grade surface treatment suppliers, strict implementation of military‑spec processes, and batch adhesion testing.
- Datum Consistency Control: 3D solid model as the sole processing datum, first‑article validation and batch in‑process inspection to ensure dimensional consistency.
Custom Service & Customer Guarantees
- Process Advantage: Cold extrusion + CNC composite process, balancing strength, precision and production efficiency.
- Medical Compliance: Adherence to medical device processing standards, full process traceability and clean production.
- Flexible Production: Support for prototyping, small‑batch and mass production to quickly respond to non‑standard customization needs.
- Full‑Process Quality Control: Multi‑node quality inspection, zero non‑conforming products delivered.
- One‑Stop Support: Complete services including process evaluation, tooling design, sample validation and after‑sales technical support.
Tel: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp: +86 187 5714 8656
Website: https://www.cncliq.com/