论文部分内容阅读
工业生产表明15—3型高铬铸铁磨球最硬、最耐磨。但由于我国铬钼资源稀少,且价格昂贵,为此我们研制了低铬白口耐磨铸铁。一、低铬白口铸铁的化学成分白口铸铁的含碳量越高,组织中的碳化物就越多,耐磨性也就越高,但是铸铁的冲击韧性则下降;含碳量越低、耐磨性越差,韧性越好。考虑到工况条件对材料韧性的要求,磨球的含碳量应高一点,以提高耐磨性,但决不能大于共晶含碳量,否则出
Industrial production shows that the 15-3 high chromium cast iron ball is the hardest and most wear-resistant. However, due to the scarcity of chromium and molybdenum resources in our country and the high cost, we have developed a low-chromium white mouth wear-resistant cast iron. First, the chemical composition of low-chromium white cast iron white cast iron high carbon content, the organization of the more carbide, the higher the wear resistance, but the impact toughness of cast iron decreased; the lower the carbon content , The worse wear resistance, the better toughness. Taking into account the working conditions of the material toughness requirements, the ball of carbon content should be higher, in order to improve the wear resistance, but must not be greater than the eutectic carbon content, or