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五金冲压·拉伸·数控车件
冲压件与机加工件按图生产，没有目录价。核心决策是模具成本：单工序模便宜但单价高，级进模贵但年量5万件以上时单价大幅下降。询价请提供 STEP/DXF 图纸，并写明公差、材料、厚度、表面处理与年用量，才能在不同产业带之间横向比价。
产业带
广东深圳/东莞——精密级进模冲压与数控车件；江苏昆山/苏州——钣金与自动化设备件；浙江余姚——小五金消费件
典型产品
材质
表面工艺
报价会引用的标准
规格参考表
| 参数项 | 需要约定的内容 |
|---|---|
| Press tonnage | 25 t to 300 t (progressive lines typically 60–200 t) |
| Min feature | Hole ≥ sheet thickness; bend radius from 0.5 t depending on grade |
| Tolerance | ISO 2768-m/f; precision dies hold ±0.02–0.05 mm |
| CNC turning | Ø0.5–Ø60 mm, Swiss-type for ≤ Ø12 mm long-thin parts |
| Tool life | Cr12MoV / SKD11 die steel, 300k–1M strokes before regrind |
| Inspection | First-article report, CMM / optical measurement, salt spray per coating |
| Coating | In-house plating for zinc/nickel; powder coat usually outsourced |
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买家常见问题
Why do two Chinese factories quote my stamped part 40% apart?
Because the quotes usually cover different things: die steel grade and expected tool life, press tonnage and stroke rate, whether plating is in-house or outsourced, tolerance class actually held, and whether the quoted unit price amortises the die. Normalise the PO around these five items and the spread narrows.
What files should I send to get a stamping quote?
A 3D STEP plus a 2D DXF with critical dimensions toleranced, material grade and thickness, coating spec, hole/bend notes, and estimated monthly and annual volumes. Without annual volume a factory will quote a small-die solution and a high unit price.