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。
The article introduces the method of superhardening treating hard alloy drawing die core with thermochemistry copermeation method so as to improve its surface hardness.
本文以硬质合金拉丝模为试验研究对象，探讨了超声加工设备有关问题，进行了超声加工工艺的研究，介绍了拉丝模的生产试验情况。
Subject for carbide wire drawing dies, it analyses the problems related to ultrasonic machining equipment, investigates ultrasonic process and introduces the production and test of dies.
本文以硬质合金拉丝模为试验研究对象，探讨了超声加工设备有关问题，进行了超声加工工艺的研究，介绍了拉丝模的生产试验情况。
Subject for carbide wire drawing dies, it analyses the problems related to ultrasonic machining equipment, investigates ultrasonic process and introduces the production and test of dies.
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