The article introduces the method of superhardening treating hard alloy drawing die core with thermochemistry copermeation method so as to improve its surface hardness.
介绍采用热化学共渗法对硬质合金拉丝模芯进行超硬化处理，以提高其表面硬度的方法。
By using the sufficiency drawing method for annealing simulation, the optimization method for improving the defect diagnosis accuracy of aeronautical ti sheet drawing die is discussed.
并采用模拟退火的适应度拉伸方法，探讨了有效地提高航空钛板拉延模试冲时的缺陷诊断准确率的优化方法。
A drawing process for sealing cover of automobile connecting rod and a method of chamfering by punching were analyzed. The die structures designed for the key procedures were introduced.
分析了汽车连杆油封盖拉伸工艺及用冲压成形完成倒角的方法，介绍了关键工位的模具结构。
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