板坯连铸结晶器内夹杂物运动行为的数值模拟  

Numerical Simulation of Inclusion Behavior in Mold for Slab Continuous Casting

作　　者：王翠娜[1] 温良英[1] 陈登福[1] 张大江[1] 彭政[1] 钟泓[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400030

出　　处：《过程工程学报》2010年第S1期201-205,共5页The Chinese Journal of Process Engineering

基　　金：重庆大学大学生创新基金项目资助

摘　　要：针对某钢厂板坯连铸结晶器的结构参数,建立了描述结晶器内钢液流动的三维数学模型,用Fluent软件对结晶器内钢液流动行为和夹杂物运动行为进行了模拟,分析了不同颗粒直径,不同颗粒密度,不同颗粒数量及不同加入位置对夹杂物上浮的影响.研究结果表明,夹杂物的轨迹与钢液的流线图相似;夹杂物颗粒数量对去除率影响不大;夹杂物密度为3500kg/m3、直径为400μm时可以完全去除;密度较小且靠近浸入式水口壁面的夹杂物易被除去.Based on the structure and parameters of one steel plant mold for slab continuous casting,a 3-D numerical model describing the flow of liquid steel and trajectories of inclusions in mold was established.The effects of diameter,density,number and position of inclusions on the trajectories of inclusions and removal rate were studied.The results showed that the trajectories of inclusions were similar to the streamlines of steel;the number of inclusions had less effect on the removal rate;when the density of inclusions was 3500 kg/m3,diameter 400 μm,the inclusions could be all removed.The inclusions with smaller density near the submerged entry nozzle wall were easy to remove.

关 键 词：板坯连铸 结晶器 夹杂物 数值模拟 

分 类 号：TF777[冶金工程—钢铁冶金]