利用燒結氧化鋁为基础的陶瓷刀具来代替硬質合金刀具,在近几年的国际机械切削工業中,是一件重大創举。苏联在这方面是领先的,1952年即已成功地应用,部分地代替了硬質合金。 燒結剛玉刀片在許多性能上比硬質合金好,特别表現在硬度、高溫硬度及耐磨等性能上。但是它的脆性較大,同时性質比较容易波动。按苏联的經驗,它只适用于精車、半精車,而不适用于毛坯的車削。中国科学院冶金陶瓷研究所进行陶瓷切削刀具的研究已有四五年。几年来,从初步試制成功到性能显著地提高,从質量容易波动到質量稳定,从应用进口原料到滿意地应用含杂質較多的国产氧化鋁原料,其間遭遇并解决了不少难題,确立了国产牌号瓷刀的生 The use of sintered alumina-based ceramic tools to replace carbide cutting tools, in recent years the international mechanical cutting industry, is a major initiative. The Soviet Union is the leader in this respect. It was successfully applied in 1952, partly replacing cemented carbide. Sintered corundum blades in many properties better than cemented carbide, especially in the performance of hardness, high temperature hardness and wear resistance. However, its fragility is larger and its properties are more volatile. According to the experience of the Soviet Union, it applies only to fine cars, semi-fine cars, but not for rough turning. Institute of Metallurgy, Chinese Academy of Sciences ceramic cutting tool for four or five years. Over the past few years, from the initial trial success to significantly improve the performance, from quality fluctuations easily to quality and stability, from the application of imported raw materials to the application of impurities containing more domestic raw materials of alumina, during which encountered and solved many problems, Established a domestic brand porcelain knife students