Based on numerical simulation to improve 45 steel intermediate crack of continuous casting process optimization
XIA Pengcheng1, WU Huajie1, AN Hanghang1, CAI Shougui2, DING Zhentao2
1. Collaborative Innovation Center for Steel Common Technology,University of Science and Technology Beijing, Beijing 100083,China; 2. Changshu Longteng Special Steel Co., Ltd.,Changshu 215500,Jiangsu,China
Abstract：Aiming at the intermediate crack problem of 45 steel billet, the solidification heat transfer and solidification structure model were established by the finite element simulation technology, and the numerical simulation and industrial test were combined to improve the intermediate crack of the billet. The results show that under the conditions of pulling speed of 1.8 m/min, superheat of 30 ℃, specific water of secondary cooling of 0.50 L/kg, and distribution ratio of each foot roll zone and secondary cooling zone 1 to 4 zone of 40%-25%-20%-12%-3%, the middle crack problem of 45 steel billet is obviously improved by industrial tests.
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2023, Vol. 42 
