摘要
为了解决薄带连铸工业生产线调试过程中断带、铸带鼓包等问题,提高薄带连铸凝固组织表面质量,基于ProCAST有限元软件,建立双辊薄带连铸工艺的非稳态模型,对Q195凝固过程的温度场及凝固组织进行模拟,采用单一变量法,研究不同工艺参数,包括浇铸温度、拉坯速度、换热系数及熔池高度对凝固过程温度场与凝固组织的影响规律。结果表明,现有工况条件Q195钢双辊薄带连铸过程中在最优参数为浇铸温度1590℃、拉坯速度为1.0 m/s、换热系数为2000 W/(m^(2)·K)、熔池高度为188 mm时,能够有效防止鼓包和断带,细化晶粒,提高薄带坯的质量。研究薄带凝固过程中的温度场、凝固组织及应力场的变化规律,对提高带材质量、推动薄带铸轧工艺国产化具有重要意义。
In order to solve the problems of strip break and strip bulging in the commissioning process of thin strip continuous casting industrial production line and improve the solidification structure and surface quality of thin strip continuous casting,an unsteady model of the twin roll strip continuous casting process was established based on the finite element software ProCAST.The temperature field and solidification structure of Q195 solidification process were simulated,and the single variable method was used to study the effects of different process parameters,including casting temperature,drawing speed,heat transfer coefficient and molten pool height,on the temperature field and solidification structure of the solidification process.The results show that the optimal parameters in the twin roll strip continuous casting process of Q195 steel under the existing working conditions are as follows:casting temperature of 1590℃,casting speed of 1.0 m/s,heat transfer coefficient of 2000 W/(m^(2)·K),and molten pool height of 188 mm,which can effectively prevent strip break and strip bulging,and can achieve the goal of refining grains and improving the quality of thin strip billets.It is of great significance to study the variation of temperature field,solidification structure and stress field in the process of strip solidification for improving the quality of strip and promoting the localization of strip casting and rolling process.
作者
鲁素玲
李小勇
余慧
高静娜
郑亚旭
徐海强
冯捷
LU Suling;LI Xiaoyong;YU Hui;GAO Jingna;ZHENG Yaxu;XU Haiqiang;FENG Jie(School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang,Hebei 050018,China;Hebei Key Laboratory of Materials Near-net Forming Technology,Shijiazhuang,Hebei 050018,China;Technical Center of Shanxi Jinnan Iron and Steel Group Company Limited,Linfen,Shanxi 043400,China;The First Steelmaking Business Department of Jingye Iron and Steel Company Limited,Pingshan,Hebei 050400,China;Technical Research Center of Jingye Iron and Steel Company Limited,Pingshan,Hebei 050400,China)
出处
《河北科技大学学报》
CAS
北大核心
2023年第2期186-194,共9页
Journal of Hebei University of Science and Technology
基金
国家自然科学基金(52204341,52174311,51874116)
河北省自然科学基金(E2021208006,E2019208308,E2021208017)。
关键词
冶金工程技术其他学科
双辊薄带连铸
温度场
凝固组织
数值模拟
other disciplines of metallurgical engineering technology
twin roll strip continuous casting
temperature field
solidification structure
numerical simulation
