Development and application of prediction model for solidification structure and segregation of 82B billet
LIU Tian1, LI Yao-guang1, SUN Yan-hui1, LI Wen-shuang2, YU Fei2
1. Collaborative Innovation Center for Common Technology of Iron and Steel, Beijing University of Science and Technology,Beijing 100083, China; 2. Technology Research Institute, Tianjin Iron and Steel Group Co., Ltd., Tianjin 100005, China
Abstract：Based on a domestic factory 82B small billet continuous casting production process, the ProCAST software was used to build 82B small billet slab macrosegregation in cross-section model, the temperature field, shell thickness and solidification organization three aspects to verify the correctness of the model, through the model the continuous casting parameters (casting speed, cooling water flows and superheat) on the cross-section of slab macrosegregation. The simulation results show that the center segregation of 82B continuous casting billet increases with the increase of casting speed and superheat, but the cooling water flows amount has little effect on the center segregation. The key to reduce the carbon segregation in the center of the billet is to control the casting speed and superheat. Therefore, in order to ensure that the carbon segregation in the center of the billet is not more than 1.10, the casting speed should be controlled below 2.64 m/min and the superheat should not be more than 10 ℃.
刘添, 李曜光, 孙彦辉, 李文双, 俞飞. 82B小方坯凝固组织和偏析预测模型开发及应用[J]. 连铸, 2022, 41(6): 8-15.
LIU Tian, LI Yao-guang, SUN Yan-hui, LI Wen-shuang, YU Fei. Development and application of prediction model for solidification structure and segregation of 82B billet. CONTINUOUS CASTING, 2022, 41(6): 8-15.
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2022, Vol. 41 
