电磁搅拌对液态夹杂物聚并及去除行为的影响规律

doi:10.13228/j.boyuan.issn1005-4006.20220082

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Abstract The characteristics of high casting speed is high efficiency and low cost, which indicates the future of continuous casting process. In this work, the multiphase flow and inclusion removements in a CSP mold are studied based on the Large Eddy Simulation model and Eulerian-Lagrange approach. Results reveal that the electromagnetic stirring (EMS) significantly intensifies turbulence in a continuous casting mold and remove more inclusions into the liquid slag. What's more, the transverse velocity is enhanced due to EMS and thus the injection of steel is confined with the mold, which significantly reduces the injection depth of liquid steel and beneficial for the floating of inclusions. In addition, due to the fact that horizontal velocity is high, the injection is confined within the electromagnetic stirring zone, which significantly reduces the injection depth of molten steel, promoting floating of inclusions. In addition, because the flow field is intensified under the effect of EMS, the slag-metal interface fluctuates more frequently, so more slag drops are involved into the steel. So the EMS has double-sided effects: Although it may enhance the removing rate of inclusions, it may also run the risk of slag entrapment into the steel. This model has a certain guiding significance to control the production of high drawing speed continuous casting slab.

Key words： mold electromagnetic stirring inclusions slag entrapment slag-metal interface continuous casting

Received: 12 May 2022

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	Articles by authors
	LI Xiang-long
	SUN Qun
	QU Tian-peng
	WANG De-yong

Cite this article:

LI Xiang-long,SUN Qun,QU Tian-peng等. Effect of electromagnetic stirring on the aggregation and removement of liquid inclusions in continuous casting mold[J]. CONTINUOUS CASTING, 2023, 42(1): 10-17.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220082 OR http://www.chinamet.cn/Jweb_lz/EN/Y2023/V42/I1/10

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