Metal Housing for Excavator Proportional Valve
What is this part? Metal Housing for Excavator Proportional Valve is a Solenoid Housing by Balford. Production process: Progressive Die Stamping → CNC Turning → Deburring → Surface Treatment. Finish: Zinc-nickel plating, applied after Vacuum annealing (coercivity to spec). Key requirements: Free of deep draw lines, scratches or surface embossing; coercivity held to spec; corrosion resistance.
Progressive Die Stamping
| Product Name | Metal Housing for Excavator Proportional Valve |
|---|---|
| Category | Solenoid Housing |
| Process Flow | Progressive Die Stamping→CNC Turning→Deburring→Surface Treatment |
| Surface Treatment | Zinc-nickel plating |
| Heat Treatment | Vacuum annealing (coercivity to spec) |
| Key requirements | Free of deep draw lines, scratches or surface embossing; coercivity held to spec; corrosion resistance |
Case Review
The housing must be free of deep draw lines, scratches, or surface embossing. We vacuum anneal to bring coercivity down to spec, then apply zinc-nickel plating for corrosion resistance. The original housing was designed and built by Thomas Group . Balford uses progressive die stamping to support China Hengli Hydraulics and all aftermarket replicas. We're thoroughly familiar with the forced-thinning deep draw sequence in a continuous progressive die.
