我国工厂所生产的地质鑽探工具,“其中硬質合金鑽头的合金刃”,目前都使用气焊镶焊的,不但生产效率低,而且成本很高,焊接的强度及质量也很难得到保证。近年来有的曾试图用电弧焊和接触焊来代替气焊,但没有得到应有的效果。有的还使用电加热爐或瓦斯发生爐进行试验,结果因为设备较大,工艺复杂,生产效率不高,同样遭到失败。我们在苏联专家的帮助 Geological drilling tools produced by our factory, “which alloy carbide drill bit”, are currently using gas welding inlay, not only low production efficiency, but also high cost, the strength and quality of the welding is difficult to be guaranteed. In recent years, some have tried to use arc welding and contact welding instead of gas welding, but did not get the desired effect. Some also use electric heating furnace or gas furnace for testing, the result of larger equipment, complex technology, production efficiency is not high, the same failed. We have the help of Soviet experts