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电磁搅拌参数对大方坯20CrMnMoH碳偏析影响的研究

巨银军

China Metal Bulletin（2020）

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Abstract
基于国内某大型钢厂350mm×430mm断面大方坯连铸机装备条件下,进行组合电磁搅拌技术在保淬透性合金结构钢20CrMnMoH碳偏析控制的应用研究.本文通过对比不同M-EMS+F-EMS工艺参数下,铸坯低倍、轧制圆钢横截面C元素统计偏析度,碳极差以及硬度极差,确定了最佳组合电磁搅拌工艺参数为M-EMS:电流350A,频率2.5Hz,F-EMS:电流600A,频率5Hz时轧制圆钢横截面C元素偏析最小,C元素统计偏析度0.0524,碳极差0.025％,硬度极差22HRB.
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