Automotive Precision Parts Machining
Volume stability, standards compliance, batch traceability — Weiyon's automotive parts machining

Automotive demands more volume stability, consistency, and traceability than general machinery. From engine peripherals to drivetrain shafts to chassis structures, each part must hold quality across large production runs. We coordinate with automotive supply chain processes — PPAP documentation, batch traceability, sampling inspection — without missing a beat.
Why Weiyon for Automotive Parts
Typical Parts
- Engine peripherals (bearing seats, shafts)
- Drivetrain components (gears, shafts, sleeves)
- Chassis structures, suspension mechanism parts
- Sensor housings for automotive electronics
- Brake-system mechanism parts
- Custom fasteners (special bolts and nuts)
Compatible Materials
- SCM435 / SCM440 (high-strength structural steel)
- S45C / S50C (medium-carbon steel, heat-treatable)
- A6061 / A2024 (aluminum alloys for lightweight parts)
- SUS304 / SUS316 (corrosion-resistant components)
- Copper alloys (bearings, bushings)
Quality & Standards
- Tolerance: per customer drawing specification
- Surface: zinc plating, blackening, powder coating, Dacromet
- Heat treatment: quench, temper, carburize, nitride
- Batch traceability and PPAP documentation
- SPC statistical process control for volume orders
Precision processes commonly used in this industry
CNC Milling
Machining centers, CNC mills, gantry mills
CNC Turning
CNC lathes, automatic lathes, conventional lathes
Precision EDM
Wire-cut, sinker EDM, micro-hole EDM (via partner network)
Sheet Metal Fabrication
Laser cutting, turret punch, press, bending, rolling (via partner network)
Surface Treatment
Heat treatment, plating, anodizing, painting, polishing, sandblasting (via partner network)
Is your part within our service scope?
Send a drawing or describe your needs — we'll respond within 1-2 business days.