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本文用对比试验的方法，研究了１０％的白口球铁丸显微激冷对大断面球铁模拟试样组织和性能的影响，分析了显微激冷在改善大断面球铁凝固行为中的独特作用．指出了应用这种方法从根本上解决大断面球铁凝固过程中的时间效应和空间（断面）效应的可能性。
In this paper, the effect of micro-chilling 10% iron pellets on the microstructure and mechanical properties of large-section ductile iron was investigated by means of comparative tests. The effects of micro-chilling on the solidification behavior of large-section ductile iron The unique role. It is pointed out that this method can fundamentally solve the time effect and the space (section) effect in the solidification of large-area ductile iron.