冷却工艺对高速连铸结晶器传热的影响

doi:10.13228/j.boyuan.issn0449-749x.20200372

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Abstract In order to analyse the influence of the cooling water supply process on the temperature field of mold copper wall and cooling water gap,based on the mold temperature data measured by thermocouples in the copper wall,a mathematical model for the inverse heat transfer question of the slab/copper wall and the forward question of the copper wall/cooling water were constructed. The numerical analysis model of the slab/copper wall/cooling water of thin slab casting mold was established by ANSYS. Coupled heat transfer analysis of the temperature field of the reactor is carried out to analyze the influence of different cooling processes on the heat transfer behavior in the high-speed thin slab continuous casting mold. The result shows that the direction of water flow in the water gap has a significant impact on the temperature field of the copper wall. The top-down "reverse water supply" is adopted,which reduces the peak temperature of the hot surface of the copper wall by 117 ℃ compared with the conventional cooling process,and the maximum temperature of the cooling water on the copper wall side Lowering 24 ℃ can effectively improve the working condition of the copper plate and suppress the local boiling tendency of cooling water. Increasing the cooling water speed can further reduce the temperature of the copper wall and the cooling water,and the cooling water temperature has less influence on the temperature field of the copper wall.

Key words： high-speed continuous casting reverse water supply thin slab copper wall temperature water gap heat transfer inverse heat transfer problem

Received: 20 July 2020

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	Articles by authors
	LIU Zeng-xun
	ZHANG Zhao-yang
	XIAO Peng-cheng
	ZHU Li-guang
	ZHOU Jing-yi
	ZHANG Jun-guo

Cite this article:

LIU Zeng-xun,ZHANG Zhao-yang,XIAO Peng-cheng等. Influence of cooling process on heat transfer of high-speed continuous casting mold[J]. Iron and Steel, 2021, 56(5): 41-48.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20200372 OR http://www.chinamet.cn/Jweb_gt/EN/Y2021/V56/I5/41

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