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一、国外发展情况超硬刀具材料主要是指人造金刚石、立方氮化硼及其复合材料。这些刀具材料及其应用是国外七十年代发展起来的新技术。超硬刀具不但开辟了用切削代替磨削HRC60～70高硬度材料的加工方法,而且能用于铝、铜等有色金属的超精加工;用于加工淬硬钢、高强度钢、喷涂材料等难加工材料。其切削效率比普通硬质合金高几十到几百倍。因此被世界上公认为最新刀具材料. 美国通用电器(GE)公司1957年制出第一个人造金刚石产品。1969～1976年间相继推出了各类多晶复合金刚石、立方氮化硼刀具。近年来美国GE公司与英国De.Beers公司、苏联、日本等公司均发展较
First, the foreign development of super-hard tool material mainly refers to synthetic diamond, cubic boron nitride and composite materials. These cutting tools and their applications are new technologies developed in the seventies abroad. Super-hard tool not only opened up with cutting instead of grinding HRC60 ~ 70 high hardness material processing methods, but also for aluminum, copper and other non-ferrous metal superfinishing; for the processing of hardened steel, high-strength steel, spray coating materials Difficult to process materials. Its cutting efficiency than ordinary carbide high tens to hundreds of times. So it is recognized as the world’s latest tool material.US General Electric (GE) Company in 1957 made the first man-made diamond products. From 1969 to 1976 have introduced various types of polycrystalline diamond, cubic boron nitride tool. In recent years, the United States GE company and the United Kingdom De.Beers companies, the Soviet Union, Japan and other companies are more developed