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概述了微量铋锑在大断面球铁中的作用。通过在生产条件下进行的模拟试验，总结出大断面球铁铋、 锑的临界加入量，且对稀土元素中和铋、锑的有害性作出了定量的评价。列举了部分大断面球铁铸件应用铋、 锑的生产实例。
The effect of micro-bismuth antimony on large-area ductile iron is summarized. Through the simulation tests conducted under the production conditions, the critical additions of bismuth and antimony in the large-section ductile iron are summarized, and the quantitative evaluation of the harmfulness of the neutralized bismuth and antimony in the rare earth elements is made. Some examples of the production of bismuth and antimony for some large-area ductile iron castings are listed.