拉速对板坯倒角结晶器钢液流动的影响

doi:10.13228/j.boyuan.issn1005-4006.20210121

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Abstract In order to study the casting speed on the condition of solidified slab shell has effects on the flow and heat transfer in the slab chamfered mould, a three-dimensional mathematical model of flow, heat transfer and solidification of slab chamfered mould and a physical model of slab chamfered mould with section size of 1 490 mm×230 mm and similarity ratio of 1∶1 were established by combining numerical simulation and physical simulation. The comparison between numerical simulation and physical simulation of flow field morphology and flow velocity at the same position of liquid surface shows that the trend of numerical simulation and water simulation is consistent. Casting speed has obvious effect on the numerical value of the flow field and temperature field in the chamfered mould, but has little effect on the overall shape. when the casting speed is increased to 1.7 m/min, the liquid surface velocity is too fast and fluctuates sharply, and slag entrapment is easy to occur.With the increase of casting speed, the impact of molten steel stream on the narrow surface solidified billet shell will be strengthened, resulting in remelting and thinning of the billet shell.Within the scope of this experiment, a better comprehensive effect can be achieved by producing at a casting speed of 1.5 m/min.

Key words： chamfered mould numerical simulation water model experiment casting speed flow field

Received: 10 October 2021

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	Articles by authors
	LIU Bin
	WANG Ming-lin
	ZHANG Hui
	WU Xuan
	YU Yue
	WANG Xue-bing

Cite this article:

LIU Bin,WANG Ming-lin,ZHANG Hui等. Effect of casting speed on molten steel flow in slab chamfered mould[J]. CONTINUOUS CASTING, 2021, 40(6): 29-37.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20210121 OR http://www.chinamet.cn/Jweb_lz/EN/Y2021/V40/I6/29

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