Aunov Tech builds this Sheet Metal Forming Electromagnetic Switch Housing in stainless steel, from coil or bar through to the finished surfaces. On the product, the solenoid component completes the magnetic circuit while locating the armature bore. Die work, machining and CMM inspection are all in-house, so the approved sample defines every later batch on one production route.
Product overview
The drawing for this metal housing fixes, wall thickness control, flange geometry and the sealing surface, re-checked whenever the drawing is revised.
Forming, machining and finishing for this metal housing happen on one site, so a change of wall or hole does not restart the programme, and the approved sample is kept as the master.
How it is manufactured
Production follows a defined route: Blanks are drawn in stages, with interstage annealing where the wall thins; secondary machining holds the seats, threads and faces that forming cannot produce.
Each run is logged against the drawing revision, so a repeat order starts from the same approved data.
Materials and surface finish
Materials kept on the floor cover carbon steel SPCC / DC01, 304 and 316 stainless, aluminium, brass and copper with carbon steel or stainless specified on the drawing for this metal housing.
The surface treatment is picked to match the service conditions: zinc, nickel or chrome plating, anodising, powder coating, electrophoresis and passivation. The choice is recorded on the drawing for this metal housing, so the decision never has to be made twice.
Dimensional reports, material certificates and PPAP levels are available on request.
Quality control
The plant is ISO 9001 certified: material traceability starts with mill certificates, a full CMM report approves the first article, and run inspections follow an agreed sampling plan. At solenoid component level, pole-face flatness and bore concentricity are CMM-checked at first article, with run gauging on the bore. Functional testing – torque, leak or pressure – can be written into the plan, and the report is packed with the shipment.
Where the part is used
This metal housing is used in industrial machinery and equipment assemblies across automotive, appliance and industrial programmes.
One drawing for this metal housing is commonly applied to several programmes, so the tightest tolerance in the family sets the spec, and the die does not have to change.
Specifications
| Item | Sheet Metal Forming Electromagnetic Switch Housing |
|---|---|
| Brand | AUNOV |
| Designing | Quotation follows the print, not a catalogue – a manufacturability review comes back with the quotation; revisions are re-quoted once rather than silently absorbed. |
| Tooling | Die design and toolmaking stay in house, so the die charge appears as its own quotation line, and ownership is confirmed on the quotation. |
| Samples | First-article samples ship with a dimensional report and material certificate, so any deviation is corrected at sample stage, and the signed sample is kept for future reorders. |
| Materials | Carbon steel (SPCC / DC01), 304 / 316 stainless, aluminium and brass are held on site; grade and temper are confirmed in writing before tooling. |
| Surface finish | Natural, plated or coated – the print decides, and the agreed finish is logged; the finish is inspected with the dimensional report on the first article. |
| Processing | Deep drawing on maintained presses, blank size and lubrication logged per run; first articles verify the whole flow before the run is released. |
| Equipment | Press shop running 5-250 T mechanical and 250-500 T hydraulic presses, annealing ovens on site, with CNC turning centres for secondary operations and CMM inspection. |
| Tolerance | +/-0.05 mm on flange and rim dimensions, wall controlled by the draw; capability is checked on the first article before the run continues. |
| Delivery terms | FOB Ningbo or Shanghai, T/T or L/C, with D/P accepted on repeat business; each volume tier carries its own quoted price. |
