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Study and development on electromagnetic nozzle swirling flow technology in continuous casting |
WU Chun-lei1, 2, LIU Xiao-ming1, LI De-wei3, ZHU Xiao-wei1, ZHAO Li-jia1, WANG Qiang1 |
1. Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819, Liaoning, China; 2. School of Metallurgy Engineering, Liaoning Institute of Science and Technology, Benxi 117004, Liaoning, China; 3. School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, Hebei, China |
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Abstract As a novel flow-control technology in the mold, the application of electromagnetic swirling flow in the nozzle (EMSFN) has gradually attracted concern from iron and steel enterprises. Based on the research of the EMSFN technology in recent years, the influence of EMSFN technology on the flow field and temperature distribution in the mold, the optional EMSFN device structure and the metallurgical effect in the industrial application are summarized and analyzed. The effect of EMSFN technology on the quality of continuous casting billet is equivalent to that by using the mold electromagnetic stirring (M-EMS). When the EMSFN technology is applied together with the M-EMS, the solidification structure of the square and round billet can be significantly refined and the macrosegregation can be alleviated. The iron and steel enterprise can select the EMSFN devices with different structures and the optimized nozzle according to the actual site conditions, to meet the quality requirements of continuous casting products in different steel grades.
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Received: 19 May 2022
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