模铸42CrMoA曲轴钢夹杂物分析

摘要/Abstract

摘要： 为提高模铸42CrMoA曲轴钢对洁净度的水平，减小其与国外同规格产品的差距，分析了曲轴钢铸锭中不同部位的夹杂物类型、成分、尺寸、数量以及分布状况，以及精炼、浇铸过程钢中夹杂物的演变规律，确定了曲轴钢铸锭中夹杂物的数量分布规律。结果表明：精炼过程夹杂物主要成分为CaO、Al2O3,含一定量的MgO，铸锭中夹杂物成分主要为CaS、CaO、Al2O3、MgO，多为脆性夹杂，形貌多为球状和块状，夹杂物数量分布规律外少内多，自头部到尾部逐渐减少。

关键词: 42CrMoA曲轴钢, 夹杂物, 成分分析, 分布规律

Abstract: To improve the cleanliness of 42CrMoA crankshaft steel ,and reduce the gap between 42CrMoA crankshaft products and imported products，the inclusion type, composition, size, quantity and distribution in different parts of 42CrMoA were analyzed. The evolution of inclusions in steel during refining and solidification process was analyzed. Inclusion distribution in crankshaft steel ingot was determined. The result showed that the inclusions in refining process were mainly composed of CaO, Al2O3 and MgO, while the chemical composition of inclusions were mainly CaS, CaO, Al2O3, MgO in the ingot. Most of inclusion morphology were spherical and block. The number of inclusion in the lateral direction was less external and more internal, and decrease gradually from the head to the tail.

Key words: 42CrMoA crankshaft steel, inclusion, component analysis, distribute regulation

翟明智，张炯明，尹延斌，韩金昊. 模铸42CrMoA曲轴钢夹杂物分析[J]. 炼钢.

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模铸42CrMoA曲轴钢夹杂物分析

Analysis of inclusions in 42CrMoA crankshaft steel by the mold casting

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