数值模拟在不锈钢中间包冶金中的应用  

Application of Numerical Simulation in Stainless Steel Tundish Metallurgy

作　　者：杨杰 陈兴润[2] Yang Jie;Chen Xingrun(Technology Center of Jiuquan Iron and Steel(Group)Corporation;Stainless Steel Branch of Hongxing Iron&Steel Co.Ltd.,Jiuquan Iron and Steel(Group)Corporation,Jiayuguan,Gansu,735100)

机构地区：[1]酒钢集团技术中心 [2]酒钢集团宏兴股份公司不锈钢分公司,甘肃嘉峪关735100

出　　处：《酒钢科技》2023年第2期16-23,共8页

摘　　要：利用数值模拟的方法对不锈钢中间包流场以及中间包RTD曲线进行数值模拟。结果表明:长水口浸入深度在500mm时,中间包钢液的流场最合理,最大停留时间为512s;死区体积最小,体积分数为10.175%,比200mm和350mm时小7.2%,比650mm时小35.9%;中间包容量扩大后,连铸中间包钢液流场更加合理,平均停留时间增加了7s,死区体积减小了5%;用气幕挡墙后,改变了钢液的流动方向,有效延长了停留时间,减少了死区;在下挡墙增加小孔并不会使流场发生明显改变。The numerical simulation method is used to simulate the flow field and RTD curve of stainless steel tundish.The results show that flow field is most reasonable when the immersion depth of the long nozzle is 500mm with the maximum retention time is 512 s;the dead zone volume is the smallest,with a volume fraction of 10.175%,which is 7.2%smaller than that at 200mm and 350mm,and 35.9%smaller than that at 650mm;after the tundish capacity is expanded,the flow field of molten steel in the continuous casting tundish becomes more reasonable,the average residenceyiny time increases by 7 seconds,and the dead zone volume decreases by 5%.After using the air curtain to block the wall,the flow direction of the liquid steel is changed,the residence time is effectively extended,and the dead zone is reduced;adding small holes in the lower retaining wall does not significantly alter the flow field.

关 键 词：不锈钢 大包长水口 浸入深度 中间包扩容 气幕挡墙 中间包流场 

分 类 号：F42[经济管理—产业经济]