单流板坯中间包挡坝结构优化的数值模拟

doi:10.13228/j.boyuan.issn1005-4006.20220055

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Abstract Based on the one-strand slab tundish of a steel corporation, the numerical simulation method was used to study the molten steel flow field and the removal of inclusions before and after the optimization of the tundish dam structure. The result shows that the optimized dam allows part of molten steel to flow out through the diversion hole, which reduces the impact of molten steel flowing upward along the dam on the liquid surface, and also avoids short-circuit flow formed by the direct outflow along the bottom. The average residence time of 30° diversion hole in the tundish is the longest, the dead zone is the smallest, and flow state is the most reasonable. When the angle of diversion hole is further increased, the molten steel flows out of the diversion hole and quickly merges into the large circulation behind the dam, and the residence time decreases. The inclusion removal rate of the 30° diversion hole is about 11% higher than that of the original structure. When the angle is further increased, the removal rate of inclusions decreases, but it is slightly better than the original dam structure. After the industrial application of the new dam structure, the results of inclusion ratings have improved significantly.

Key words： tundish structure optimization resident time distribution inclusion numerical simulation

Received: 22 April 2022

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	Articles by authors
	XING Li-yong
	GAO Yu
	ZHANG Cai-dong
	YAO Hong-yong
	LI Jie
	TIAN Zhi-qiang

Cite this article:

XING Li-yong,GAO Yu,ZHANG Cai-dong等. Numerical simulation of structure optimization of one-strand slab tundish dam[J]. CONTINUOUS CASTING, 2022, 41(5): 95-100.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20220055 OR http://www.chinamet.cn/Jweb_lz/EN/Y2022/V41/I5/95

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