LIU Zeng-xun1,2, CHAI Qing-feng3, XU Wang1,2, XIAO Peng-cheng1,2, WANG Bo1,2, MAO Xue4
1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063000, Hebei, China; 2. Hebei Province High Quality Steel Continuous Casting Engineering Technology Research Center, Tangshan 063000, Hebei, China; 3. Hebei Chemical and Pharmaceutical College, Shijiazhuang 050026, Hebei, China; 4. Hegang Leting Steel Co., Ltd., Tangshan 063600, Hebei, China
Abstract：The central shrinkage is a problem that is difficult to solve and easy to appear in the quality defect of the slab. A two-dimensional thermodynamic coupling model of 1/4 billet is established based on the mechanism of the formation of shrinkage cavities in the solidification end of billet continuous casting. The model analysis is carried out by ANSYS finite element software, which is compared with the traditional thermodynamic coupling simulation process. The results show that the formation process of the central shrinkage cavity simulated by the traditional model method is inconsistent with the actual one. The new model method eliminates the loophole of the traditional method, and the law of the formation of the central shrinkage cavity is consistent with that of the theoretical analysis. Then the changes of slab temperature and the thickness of the shell are analyzed.
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LIU Zeng-xun, CHAI Qing-feng, XU Wang, XIAO Peng-cheng, WANG Bo, MAO Xue. Numerical analysis of center shrinkage of billet[J]. China Metallurgy, 2020, 30(2): 63-67.
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2020, Vol. 30 
