我厂自1953年生产球墨铸铁以来,一向采用常压钟罩式加镁。1960年和1963年曾两次推行过灭容加镁,都因处理速度慢,不能满足生产需要并发生较大的跑镁事故而失败。1964年我们设计了转动式减容加镁包,经过试用,性能良好,它具备操作简便、安全省镁、适合大量生产等优点,已经正式投入生产。仅从用镁量看,就由原来的0．6%降低到0．18%。 I plant since the production of ductile iron in 1953, has been using atmospheric bell jar plus magnesium. Both Extinguishing Magnesium and Magnesium have been introduced twice in 1960 and 1963, all because of slow processing, failure to meet production needs and large magnesium accidents. In 1964 we designed a rotating capacity reduction plus magnesium package, after trial, good performance, it has the advantages of easy operation, safety and magnesium, suitable for mass production, has been officially put into production. Only from the amount of magnesium, from the original 0.6% to 0.18%.