连铸单流中间包钢液非稳态流动行为物理模拟

doi:10.13228/j.boyuan.issn1005-4006.20210079

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Abstract Aiming at the problem that the unsteady changing process significantly deteriorates the cleanliness of molten steel, a physical model with a scale ratio of 1∶2 was established to investigate the unsteady flow behavior of molten steel in a single strand tundish based on the similarity principle.The results show that the flow state of the fluid in tundish can be effectively improved by setting reasonable size dam and weir and turbulence controller under steady state condition. In the unsteady condition, when the ladle change is over and the tundish liquid level rises, the average residence time of liquid steel increases with the increase of liquid level, up to 497 s.The dead volume fraction decreases gradually with the liquid level rising, and the minimum value is 23.91%. During the whole ladle change process, the liquid level decreases and rises with the drastic fluctuation of the flow state, which eventually deteriorates the removal behavior of non-metallic inclusions in molten steel.

Key words： unsteady flow tundish inclusion removal RTD curve physical modeling

Received: 02 July 2021

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	Articles by authors
	WANG De-yong
	QUAN Qi
	QU Tian-peng
	ZHOU Xing-zhi
	LI Xiang-long
	CHEN Gang

Cite this article:

WANG De-yong,QUAN Qi,QU Tian-peng等. Physical modeling on unsteady flow behavior of molten steel in single strand tundish[J]. CONTINUOUS CASTING, 2021, 40(5): 60-68.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20210079 OR http://www.chinamet.cn/Jweb_lz/EN/Y2021/V40/I5/60

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