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

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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

Published: 25 April 2022 Online: 2022-04-27

CLC number:

TG146.4

Fund:Natural Science Foundation of Liaoning Province (20170520104)

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	Articles by authors
	GUO Qingtao
	TANG Xuefeng
	LI Zelin
	PAN Dong
	CHAI Mingliang
	JIA Jixiang

Cite this article:

GUO Qingtao,TANG Xuefeng,LI Zelin, et al. Research on the Influence of Single Winding Helical Electromagnetic Stirring on the Center Segregation of High Carbon Large Square Billet[J]. Materials Reports, 2022, 36(8): 21010147-7.

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http://www.mater-rep.com/EN/10.11896/cldb.21010147 OR http://www.mater-rep.com/EN/Y2022/V36/I8/21010147

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