大方坯轴承钢GCr15凝固传热数值模拟

doi:10.13228/j.boyuan.issn1005-4006.20200066

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Abstract Taking a slab section was 280 mm×320 mm bloom bearing steel GCr15 as the research object, two-dimensional generous slab solidification heat transfer model was established by using ProCAST software. The paper studied the casting speed, cooling water and degree of superheat on the solidification process of slab, and through the influence on the central solid rate, determined the position of final electromagnetic stirring and the interval of soft reduction under the optimal matching the casting speed. The results show that the change of casting speed has a great influence on the central solid rate and the position of solidification end point, the influence of cooling water is greater, and the influence of degree of superheat is the least. The solidification end point increases by 1.97 m for every 0.1 m/min of casting speed, and decreases by 0.82 m for every 0.1 L/kg of secondary cooling water, and increases by 0.27 m for every 10 ℃ of degree of superheat. The optimum casting speed is 0.85 m/min. The position of final electromagnetic stirring and the interval of soft reduction match with the reasonable central solid ratio under this casting speed.

Key words： bearing steel GCr15 numerical simulation casting speed central solid rate slab solidification

Received: 27 May 2020

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	Articles by authors
	YE Yu-kui
	YAO Cheng
	LIU Yu
	WANG Min
	WANG Xiang-hong
	BAO Yan-ping

Cite this article:

YE Yu-kui,YAO Cheng,LIU Yu等. Numerical simulation of solidification and heat transfer in bloom bearing steel GCr15[J]. CONTINUOUS CASTING, 2020, 39(6): 15-20.

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http://www.chinamet.cn/Jweb_lz/EN/10.13228/j.boyuan.issn1005-4006.20200066 OR http://www.chinamet.cn/Jweb_lz/EN/Y2020/V39/I6/15

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