球铁局孕育可防止凝固期中球化衰退,防止碳化物形成和析出形状理想、分布均匀的球墨。含石墨的孕育剂在铁水包中孕育低硫铸铁没有什么效果,这是由于用作孕育剂石墨的晶质特性和孕育剂溶解速度高的原因。结晶好的石墨比结晶差的石墨 Nodular iron inoculation can prevent the ball in the solidification decline, prevent the formation of carbide and precipitation shape ideal, uniform distribution of nodular ink. Graphite-containing Inoculants It is not effective to produce low-sulfur cast iron in ladle because of the high crystalline nature of inoculant graphite and the high dissolution rate of inoculants. Good crystallization of graphite than poor crystallization of graphite