Metal Washer for ESC/ABS Megnet Solenoid
What is this part? Metal Washer for ESC/ABS Megnet Solenoid is a Washer / Shim manufactured from cold-rolled steel by Balford. Production process: Precision Stamping → Deburring → Surface Treatment. Finish: Barrel Zn-Fe plating, applied after Dehydrogenation. Key dimensions: Perpendicularity of outer cutting edge max 0.03 mm; face parallelism max 0.03 mm; bright band above 95%. Key requirements: Center hole concentric and coaxial with the housing; no burrs; salt spray test pass; clean surface finish.
Precision Metal Stamping
| Product Name | Metal Washer for ESC/ABS Megnet Solenoid |
|---|---|
| Category | Washer / Shim |
| Process Flow | Precision Stamping→Deburring→Surface Treatment |
| Material | cold-rolled steel |
| Surface Treatment | Barrel Zn-Fe plating |
| Heat Treatment | Dehydrogenation |
| Key dimensions | Perpendicularity of outer cutting edge max 0.03 mm; face parallelism max 0.03 mm; bright band above 95% |
| Key requirements | Center hole concentric and coaxial with the housing; no burrs; salt spray test pass; clean surface finish |
Case Review
Metal Washer for ESC/ABS Magnet Solenoid The washer's center hole must be concentric and coaxial with the housing's center hole. The bright band on the center hole and the outer dimension cutting edge must exceed 95%, which requires fine blanking to achieve. Perpendicularity of the outer cutting edge is held to 0.03mm max, and parallelism between the upper and lower faces is also 0.03mm max. This washer is used on ESC/ABS electromagnetic coils and is supplied to Betheli Automotive Safety Systems Co., Ltd. It goes into new energy vehicles, so the specs are tight: no burrs allowed, must pass a high salt spray test, and the surface finish has to be clean. Product process: cold-rolled steel, two-up blanking, fine blanking in two hits, roller deburring, then barrel Zn-Fe plating.
