一、前言关于难加工材料的切削加工问题,其中更为困难的是车削切断问题。为了探索难加工材料在车削切断时的特点,我们对高铬白口铸铁进行了车削切断的试验研究。从我国近年来研制的一些新型优质硬质合金中,选出适用的牌号,并通过试验优选出刀具角度、切削速度、进给量等参数。通过试验提高对高铬白口 First, the foreword On the difficult processing of materials, cutting problems, of which the more difficult turning off the issue. In order to explore the characteristics of difficult-to-cut materials in cutting, we conducted the cutting research of high-chrome white cast iron. From our country in recent years developed some new high-quality cemented carbide, choose the appropriate grades, and through the trial optimization tool angle, cutting speed, feed and other parameters. By testing to improve the high-chromium white mouth