小方坯弧形结晶器水口位置优化设计  

Optimization of Design of Nozzle Position in Curved Mold for Small Square Billet

作　　者：王军[1] 苗华星 吴永全[2,3,4] WANG Jun;MIAO Huaxing;WU Yongquan(Hunan Valin Xiangtan Iron&Steel Co.,Ltd.,Xiangtan Hunan 411101,China;State Key Laboratory of Advanced Special Steel,Shanghai University,Shanghai 200444,China;Shanghai Key Laboratory of Advanced Ferrometallurgy,Shanghai 200444,China;School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China)

机构地区：[1]湖南华菱湘潭钢铁有限公司,湖南湘潭411101 [2]上海大学省部共建高品质特殊钢冶金与制备国家重点实验室,上海200444 [3]上海市钢铁冶金新技术开发应用重点实验室,上海200444 [4]上海大学材料科学与工程学院,上海200444

出　　处：《上海金属》2025年第1期76-84,共9页Shanghai Metals

基　　金：国家自然科学基金(52074178)。

摘　　要：鉴于某厂150mm×150mm方坯角部纵裂,对弧形结晶器的流场和温度场进行了数值模拟。设计了水口在中心位置水平偏移和偏转的7种方案。通过对比流场对称性和温度分布均匀性,发现水口向内弧偏转0.5°~1.0°或向内弧偏移5mm的方案获得的流场对称性和温度分布均匀性最好,方坯角部纵裂明显减少。In view of the longitudinal cracking of corner of billet measuring 150 mm by 150 mm,the numerical simulations were performed on the flow field and temperature field in the curved mold,and seven schemes such as horizontal displacement and deviation of the nozzle at the center position were designed.From comparison of the symmetry of the flow field with uniformity of the temperature distribution it was found that the scheme that deviation of the nozzle from the inner arc was 0.5°to 1.0°or offset of the nozzle from the inner arc was 5 mm achieved the best flow field symmetry and temperature distribution uniformity,and the longitudinal cracks at corner of the billet were significantly decreased.

关 键 词：小方坯连铸 流场 温度场 角部纵裂 

分 类 号：TF777[冶金工程—钢铁冶金]