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简要介绍了一种适合于大断面球铁悬浮铸造用微型冷铁的制备工艺；探讨了采取常规悬浮铸造方法加入１０％的该种微型冷铁对大断面珠铁元素偏析、球化衰退及机械性能的影响。
The preparation technology of micro-chill iron suitable for suspension casting of large-section ductile iron is briefly introduced. The micro-chill iron with large cross-section of pearlite and 10% The impact of performance.