试验研究了钇基重稀土复合球化剂对球铁的铁水净化 (脱硫 )、球化、抗球化衰退、铸态基体组织以及机械性能的影响。结果表明 ,钇基重稀土复合球化剂具有脱硫、球化、抗球化衰退能力强 ,细化基体组织 ,白口倾向小及提高球铁抗拉强度和延伸率的作用 ,在高炉冷却壁、轧辊等关键铸件上应用可提高心部性能和成品率。 The effect of yttrium-based heavy rare earth composite nodulizer on hot metal purification (desulfurization), spheroidization, anti-spheroidization, as-cast matrix structure and mechanical properties of ductile iron was investigated experimentally. The results show that the Yttrium-based heavy rare earth composite nodulizer possesses the ability of desulfurization, spheroidization and anti-spheroidization. It has the effect of thinning the matrix structure and whiteness and improving the tensile strength and elongation of the ductile iron. , Rolls and other key castings on the application can improve the heart performance and yield.