超薄大断面异型坯结晶器非对称流场和温度场的优化

doi:10.13228/j.boyuan.issn1005-4006.20210083

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Abstract A 0.7∶1 hydraulic test model was established to optimize the nozzle structure to improve the flow field of ultra-thin large section blank, and the three-dimensional flow field and temperature field of molten steel in the mold and its secondary cooling section were numerically simulated under actual production conditions. It was showed that the flow field distribution in the existing through nozzle mould was extremely asymmetric and the response time of each position of the mould was quite different, resulting in the uneven distribution of temperature and composition in the mold. The optimized three-side hole and one bottom-hole nozzle effectively solves the problem of long and inconsistent response time at different positions of the mould and improves the serious asymmetric flow field during single-point straight-through nozzle pouring. The temperature difference between the pouring side and the non pouring side is significantly reduced, and the temperature change along the drawing direction is also more reasonable, which is conducive to the formation of a good solidified shell. This process provides guidance for actual production.

Key words： ultra-thin large section beam blank casting mold nozzle flow field temperature field

Received: 07 July 2021

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	Articles by authors
	LI Si-jun
	PENG Yong-xiang
	LI Ping
	NING Wei
	DU Jin-ke
	FU Chang-wei

Cite this article:

LI Si-jun,PENG Yong-xiang,LI Ping等. Optimization of asymmetric flow field and temperature field of ultra-thin and large section beam blank mould[J]. CONTINUOUS CASTING, 2021, 40(6): 9-16.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20210083 OR http://www.chinamet.cn/Jweb_lz/EN/Y2021/V40/I6/9

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