近年来,由于材料科学的发展,新技术、新工艺的涌现及微电子技术的广泛应用,刀具的材质、刀具结构及金属切削加工技术等方面出现了某些质的变革,其主要特征大体可归纳为以下几个方面。二、新型高性能、高效、长寿命刀具材料的出现与应用 In recent years, due to the development of materials science, the emergence of new technologies and new processes, and the widespread application of microelectronic technology, certain qualitative changes have emerged in the tool materials, tool structures and metal cutting technologies. The main features are generally Summarized as the following aspects. Second, the emergence of new high-performance, high efficiency, long life tool material and application