The nodulizing effect and fading-resistant of spheroidal graphite of the chunky pressurized composite yttrium heavy rare-earth nodulizer have been studied in lab.

• 用保温模似法和附铸试样试验，研究了新型压块状钇基重稀土复合球化剂的球化处理工艺及其球化效果和抗球化衰退性。