球墨铸铁球化衰退的分析与处理
Analysis and Treatment on Degradated Spheroidization of Ductile Iron
魏家鹏，潘宏歌
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作者单位：（辽宁工程技术大学 实验实训中心，辽宁 阜新 123000）
中文关键字：石墨；变态；过球化
英文关键字：graphite； metamorphosis； over spheroidizing
中文摘要：在熔炼球墨铸铁时，铸铁中的石墨形态常常发生变化。尤其是在浇铸大断面球墨铸铁件时，铸件中心的石墨经常出现变态。石墨变态不能简单的用球化衰退来描述。球化衰退不仅概念模糊，对完善球墨铸铁生产工艺也会产生误导作用。
英文摘要：When producing ductile iron, the graphite morphology in cast iron often changes. Especially in making large cross-section ductile iron parts, the graphite of the casting center is often abnormal. Graphite metamorphosis can not be described by degradated spheroidization. It is not only vague in concept, but also misleading in improving the production process of ductile iron .