小方坯连铸结晶器横向曲面模拟优化设计  

Optimization Design on Transverse Curved Surface of Small Square Billet Continuous Casting Crystallizer

作　　者：甄成国 麻永林[1] 邢淑清[1] 陈重毅[1] 白庆伟 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《铸造技术》2016年第5期948-952,960,共6页Foundry Technology

基　　金：国家自然科学基金资助项目(51044002);科技部国际合作资助项目(2010DFB70630)

摘　　要：针对实际连铸生产过程中连铸坯偏角部热点区容易产生表面凹陷等缺陷问题,根据连铸过程凝固规律研究与实际漏钢坯壳测量分析建立了小方坯传热数学模型。采用有限元软件ANSYS模拟计算了不同结晶器横向曲面设计下结晶器内坯壳温度场、应力场以及坯壳厚度分布。结果表明:在结晶器偏角部位设置具有部分横向曲面的结晶器,能在有效消除铸坯偏角部表面凹陷的同时不会增加角部裂纹产生机率,为最优设计方案。Aiming to the problem of high occurrence of surface depressions defects near the hot spot in actual continuous casting production process, a mathematical model for small square billet heat transfer was established according to the solidification law of continuous casting process and the measurement and analysis in actual leaky billet shell. The temperature field, stress field and shell thickness distribution of the slab in the different transverse curved surface crystallizer were simulated by using the finite element software ANSYS. The results show that the partial transverse curved surface crystallizer which is set near corner can eliminate surface depressions of billet near corner and don＇t increase the incidence of corner crack. This is the optimal design project.

关 键 词：小方坯 结晶器 优化设计 热-力耦合 

分 类 号：TF777[冶金工程—钢铁冶金]