论文部分内容阅读
用无压浸渍法制造金刚石扩孔器,具有精度高、耐磨性好、可造复杂形状以及制造简单等优点、所以被广泛采用。但近来发现,个别厂家的产品有胎体脱落、掉块现象。其主要原因是制造工艺掌握不当而引起胎体脆化,以及胎体与钢体粘合不好。当前,诸厂家广为采用的胎体配方,都存在着其线胀系数与钢体线胀系数不一致的问题。这样,在高温烧结时,粘结金属熔化,其扩散作用使胎体与钢体
Pressure impregnation method for making diamond reamer, with high precision, good wear resistance, can create complex shapes and manufacturing advantages, it is widely used. But recently found that individual manufacturers of carcass products have off, off phenomenon. The main reason is improper manufacturing process caused by the embrittlement of the carcass, as well as the carcass and the steel bonding is not good. Currently, the manufacturers widely used carcass formulations, there is a linear expansion coefficient of its coefficient of inconsistency with the steel body. In this way, at high temperature sintering, the bonding metal melts, the diffusion of the role of the carcass and the steel body