厚断面铸态珠光体球铁的生产

Casting of Heavy Section As-cast Pearlitic Ductile Iron

介绍了厚断面铸态珠光体球铁打桩机上活塞铸件（Ф790×5200mm）的生产工艺，采用冲天炉-工频炉双联熔炼，原铁水预脱硫，瞬时孕育，铁型强制风冷等工艺措施，铸件性能可达到用户的验收标准。

This paper introduces the foundry process of heavy section hammer of as-cast pearlitic ductile iron （Ф790×5200mm）. It was made by duplexing of cupola and electric induction furnace, pre-desulphurization of molten iron, stream inoculation and forced air cooling of permanent mold etc. The properties of the casting meet the customer＇s purchasing specification.