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用铋锡合金模具生产汽车覆盖件,在我厂已有七年之久了。年产2000辆的 BJ212吉普车车身的经济效益是很可观的,产品在社会上也享有较高的声誉。多年来虽对这种材料的模具技术积累了不少的经验,但拉深起皱问题一直未能得到解决。针对这一问题我不断地进行了改进.一问题的提出我厂所使用的铋锡合金拉深模韵结构如图1所示。由于低溶点合金单工序拉深模自身结构的原因,铸模时凸模与压边圈之间需有一道分模隔板,隔板
Bismuth-tin alloy die car cover production, in our plant for seven years. The annual economic output of the BJ212 jeep body with a capacity of 2000 units is considerable. The products also enjoy a high reputation in the society. Over the years although this material mold technology has accumulated a lot of experience, but the deep wrinkling problem has not been resolved. In response to this problem, I continue to improve.A question put forward by our plant bismuth-tin alloy deep drawing die Yun structure shown in Figure 1. As a result of low-melting alloy single-step drawing process its own structure of the reasons for the mold when the punch and the blank holder between the need to have a separate partition, partition