瓷刀比硬质合金能耐更高的温度,在高温时硬度下降很少,抗磨性强而价格又便宜;但最大的缺点是性脆,机械性能低,抗弯强度及耐冲击强度都很小,因此解决这个矛盾就成为当前瓷刀研究工作的核心问题。一、瓷刀的种类及性能1.各国瓷刀的发展概况人类利用瓷刀来加工金属,是二十世纪初才开始 Porcelain knife than cemented carbide can withstand higher temperatures, the hardness decreased at high temperatures rarely, strong abrasion resistance and cheaper prices; but the biggest drawback is the brittleness, low mechanical properties, bending strength and impact strength are very So, to solve this contradiction has become the core issue of the current porcelain knife research. First, the type and performance of porcelain knife 1. The development of porcelain knife in various countries Human use of porcelain knife to the processing of metal, is the beginning of the twentieth century