本文通过一系列试验得到两种稀土、碱土金属复合变质剂。用它们对低铬抗磨白口铸铁进行变质处理,可使共晶碳化物形态明显改善,形成分散的板条状分布,从而明显地提高材料的韧性。扩大了低铬白口铸铁的应用范围。文中对该复合度质剂的变质机理也进行了探讨。 In this paper, a series of experiments to obtain two kinds of rare earth, alkaline earth metal composite modifier. Using them to modify the low-chromium anti-wear white cast iron, the eutectic carbide morphology can be significantly improved, the formation of scattered strip-like distribution, which significantly improve the toughness of the material. Expand the scope of application of low-chromium white cast iron. In this paper, the mechanism of metamorphic agent deterioration was also discussed.