Finite Element Simulation of Copper Slab Horizontal Continuous Casting Process Based on Double Temperature Field Coupling

Author of the article:LIU Jinsong1,2, ZHANG Liangli1 , WANG Songwei2 , KONG Fanya2 , LIU Yufei3 , ZHANG Wang3

Author's Workplace：1. School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China; 2. Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; 3. JCC Copper Strip Co., Ltd., Nanchang 330096, China

Key Words：horizontal continuous casting; numerical simulation; crystallizer; temperature field; flow field

Abstract：Taking the horizontal continuous casting process of copper alloy slab as the research object, the three-dimensional steady-state mathematical model of slab continuous casting mold was accurately established by using finite element software, and the “double temperature field” synchronous coupling simulation calculation of copper liquid solidification cooling and cooling water heating in the mold was carried out. The distribution laws of cooling water temperature field and velocity field in the existing mold structure and its internal relationship with the solidification process of copper liquid were analyzed. The results show that when the casting temperature is 1 170 ℃ and the inlet water temperature is 28 ℃, the temperature field of the copper and graphite wall surface is distributed in the form of “double vortex”, and the average temperature is 179.68 ℃and 340.88 ℃, respectively. When the inlet water pressure of copper sleeve is respectively 0.4, 0.5 and 0.6 MPa, the solidification time of the corresponding billet is respectively 27.82, 13.76 and 9.76 s, that is, the solidification rate is accelerated, the cooling intensity in the middle is increased, and the bending radian of the crystal line decreases. When the outlet water pressure increases, the temperature drop at the edge of the billet slows down, the cooling intensity decreases, and the bending radian of the crystal line also decreases.