在金属材料中,铸铁很久就用于各个方面,因其具有良好的成形性(易熔化、易铸造),才被广泛用于制造机械零件。对于汽车工业方面,发动机更是大量地使用了铸铁。铸铁的材质性能也取得了显著的进步。球墨铸铁的出现使抗拉强度已达到70公斤/毫米~2,且在一定程度上满足了强韧性的要求。有关铸铁的耐磨性,是通过改进具有自润性的石墨和特殊碳化物 In metal materials, cast iron has been used for a long time in all aspects. Because of its good formability (easy melting, easy casting), cast iron is widely used in the manufacture of mechanical parts. For the automotive industry, the engine is heavily used cast iron. The material properties of cast iron have also made significant progress. The emergence of ductile iron so that the tensile strength has reached 70 kg / mm ~ 2, and to some extent to meet the toughness requirements. The wear resistance of cast iron is improved by self-lubricating graphite and special carbides