连铸坯拉速对结晶器卷渣现象的影响

doi:10.13228/j.boyuan.issn1005-4006.20220011

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Abstract High-speed casting is charaterized by high efficiency and lower cost, indicating the future of continuous casting process. Taking the conventional slab for example, the large eddy simulation (LES) method is adopted to study the slag entrapment in a casting mold. Results reveal that the flow field during low casting speed remains steady. This leads to the fact that the upward flow velocity and the fluctuations of slag-metal interface are quite low. By comparison, under the effect of high casting speed, the impingement velocity of steel increases, and more slag drops are involved into the mold. Through analyzing the maximum velocity of the slag-metal interface, a new criterion for the critical velocity of slag entrapment is established. It is found that the critical velocity of slag entrapment is different under different casting speed. The reason for this phenomenon is because of the differences of slag entrapment mechanisms. This model has a certain guiding significance to control the production of high-speed continuous casting.

Key words： mold casting speed slag entrapment slag-metal interface continuous casting

Received: 26 January 2022

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	Articles by authors
	LI Xiang-long
	FENG Sheng-qiang
	ZHANG Zhi-xiao
	WU Guang-jun
	ZHANG Pei
	QU Tian-peng

Cite this article:

LI Xiang-long,FENG Sheng-qiang,ZHANG Zhi-xiao等. Effect of casting speed on slag entrapment in continuous casting mold[J]. CONTINUOUS CASTING, 2022, 41(2): 100-108.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220011 OR http://www.chinamet.cn/Jweb_lz/EN/Y2022/V41/I2/100

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