单绕组螺旋电磁搅拌对高碳大方坯中心偏析影响的研究

doi:10.11896/cldb.21010147

材料导报

2022, Vol. 36

Issue (8): 21010147-7 https://doi.org/10.11896/cldb.21010147

金属与金属基复合材料

单绕组螺旋电磁搅拌对高碳大方坯中心偏析影响的研究

郭庆涛¹, 唐雪峰², 李泽林³, 潘栋¹, 柴明亮², 贾吉祥²

1 鞍钢集团北京研究院有限公司,北京 102211
2 鞍钢股份技术中心,辽宁鞍山 114009
3 鞍钢股份炼钢总厂,辽宁鞍山 114009

Research on the Influence of Single Winding Helical Electromagnetic Stirring on the Center Segregation of High Carbon Large Square Billet

GUO Qingtao¹, TANG Xuefeng², LI Zelin³, PAN Dong¹, CHAI Mingliang², JIA Jixiang²

1 Ansteel Beijing Research Institute Co., Ltd., Beijing 102211, China
2 Technology Center of Ansteel Co., Ltd., Anshan 114009, Liaoning, China
3 General Steelmaking Plant of Ansteel Co., Ltd., Anshan 114009, Liaoning, China

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摘要本工作自主开发了一种新型的螺旋电磁搅拌器(单绕组),并研究了单绕组线圈所激发的螺旋电磁场对含碳量为0.75%(质量分数)的钢铸坯(大方坯)的元素分布的影响。研究结果表明,螺旋电磁搅拌的电流、搅拌频率以及搅拌方式都会显著影响合金元素的分布。当对铸坯进行反螺旋型搅拌时,螺旋搅拌的电流越大(400 A以上)、频率越高(6 Hz以上),碳元素的偏析程度越低。采用电火花原位分析测定了搅拌前后铸坯的碳元素偏析程度,结果表明,对螺旋电磁搅拌的参数进行优化后,铸坯中心区域的碳元素的统计偏析度可降低50%以上(95%的置信区间)。

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	郭庆涛
	唐雪峰
	李泽林
	潘栋
	柴明亮
	贾吉祥

关键词: 大方坯连铸螺旋电磁搅拌碳偏析

Abstract: In this work, a new type of helical electromagnetic stirrer (single winding) was developed, and the influence of helical electromagnetic field excited by single winding coil on the element distribution of steel billet (large square billet) with carbon content of 0.75% (mass fraction) was also investigated. The results indicated that the current, stirring frequency and stirring mode of spiral electromagnetic stirring will significantly affect the distribution of alloy elements. In the reverse helical stirring mode, the higher the current and frequency of spiral stirring are (higher than 400 A and 6 Hz, respectively), the more significantly element segregation of billet will be improved. The segregation degree of alloy elements before and after stirring was measured by spark in-situ analysis. It is found that the statistical segregation degree of carbon elements in the central area of billet can be reduced by more than 50% (95% confidence interval) after stirring through helical electromagnetic field with optimized parameters.

Key words: large square billet continuous casting helical electromagnetic stirring carbon segregation

出版日期: 2022-04-25 发布日期: 2022-04-27

ZTFLH:

TG146.4

基金资助: 辽宁省自然科学基金(20170520104)

通讯作者: agbjyPD@163.com

作者简介: 郭庆涛,2007年在大连理工大学获得博士学位,现为鞍钢股份有限公司技术中心及鞍钢集团北京研究院的二级研究员,以第一作者在国内外SCI期刊发表论文6篇,申请国家发明专利8项,授权6项。目前从事铸坯均质化、液态金属的电磁搅拌相关方面的研究。
潘栋,2020年在吉林大学获得博士学位,现工作于鞍钢集团北京研究院。在国内外SCI期刊发表论文13余篇,申请国家发明专利2项。目前,主要从事连铸坯凝固组织热模拟、液态金属的电磁搅拌以及固态金属的电致强韧化等相关方面的研究。

引用本文:

郭庆涛, 唐雪峰, 李泽林, 潘栋, 柴明亮, 贾吉祥. 单绕组螺旋电磁搅拌对高碳大方坯中心偏析影响的研究[J]. 材料导报, 2022, 36(8): 21010147-7.
GUO Qingtao, TANG Xuefeng, LI Zelin, PAN Dong, CHAI Mingliang, JIA Jixiang. Research on the Influence of Single Winding Helical Electromagnetic Stirring on the Center Segregation of High Carbon Large Square Billet. Materials Reports, 2022, 36(8): 21010147-7.

链接本文:

http://www.mater-rep.com/CN/10.11896/cldb.21010147 或 http://www.mater-rep.com/CN/Y2022/V36/I8/21010147

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