随着我国工业和现代科学技术的飞跃发展,金属切削速度的相应提高,刀具的使用条件日益苛刻,尤其是一些难加工的超高强度钢、高温合金、耐腐蚀及特殊性能的新材料的出现,对刀具的各项性能指标,特别是刀具的耐磨性、红硬性提出了更高的要求。对于一般目前广泛使用的钨系高速钢(18-4-1)和钨钼系高速钢(6-5-4-2)已远远满足不了当今现代工业技术发展的需要。钻高速钢具有极好的红硬性和耐磨性等。但由于金属钴是我国稀缺的金属元素,需要从国外进口。价格昂贵,不宜推广。为立足于我国资源条件,以铝元素代替钴元素,研制出来 With the rapid development of our country’s industry and modern science and technology, the corresponding increase of metal cutting speed has made the use of cutting tools more and more harsh. Especially the emergence of some difficult new materials such as ultra-high strength steel, superalloy, corrosion resistance and special properties , The various performance indicators on the tool, especially the wear resistance of the tool, red hardness put forward higher requirements. For the currently widely used tungsten high-speed steel (18-4-1) and high-speed tungsten-molybdenum steel (6-5-4-2) has been far unable to meet today’s modern industrial technology needs. Drilling HSS has excellent red hardness and wear resistance. However, since metallic cobalt is a scarce metal element in China, it needs to be imported from abroad. Expensive, not to promote. Based on the conditions of our country’s resources, the aluminum element was substituted for the cobalt element and developed