我厂过去焊接硬质合金刀具,是用乙炔氧火焰进行的,这种方法对质量的控制比較困难,主要缺点有:乙炔氧火焰溫度过高,超过硬质合金的燒結溫度(1550℃),焊后易使合金疏松变粗;刀体的焊接表面过于氧化,使合金与刀体接触不良,容易脫落;刀头上堆料太多,修磨費时。針对当时的問題,我厂工具車間磨刀組,在多方面的协助下,参照了华东区技术革新展覽会的經驗、利用 The past welding of carbide cutting tools in our factory is carried out by the acetylene oxygen flame. This method is difficult to control the quality. The main disadvantages are: acetylene oxygen flame temperature is too high, exceeding the sintering temperature of cemented carbide (1550 ℃) Easily make the alloy easy to loose after welding; Tool body welding surface is too oxidized, the alloy and the knife body poor contact, easy to fall off; too much material on the cutter head, grinding time-consuming. In response to the problems at the time, our factory tooling shop sharpening group, with the help of many, with reference to the East China area technology innovation exhibition experience, use