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我厂冷冲压件大多数是3～12毫米的中厚钢板,约占产品冲压件的80%。常用的材料有20,45。A_3,25CrMnSiA 等。中厚钢板冲压加工遵循板料冲压加工的一般原理,但在具体分离工序、成形工序和一些工艺参数上又与薄板冲压有区别。特别是在力的参数、冲裁间隙、模具设计、模具寿命和冲裁件质量等方面。因此在编制中厚钢板零件工艺和模具设计中还有许多问题值得探讨。本文根据我厂实践,同时结合调研情况介绍如下问题。
Most of our cold stamping parts are 3 ~ 12 mm thick steel plate, accounting for about 80% of the product stamping parts. Commonly used materials are 20,45. A_3,25CrMnSiA and so on. Medium-sized steel stamping process follows the general principle of sheet metal stamping, but in the specific separation process, forming process and some process parameters and sheet metal stamping there are differences. Especially in the parameters of force, blanking clearance, mold design, mold life and quality of blanking parts. Therefore, in the preparation of medium-thick steel plate parts and mold design process there are many issues worth exploring. This article according to my factory practice, at the same time combined with the survey introduced the following issues.