多流中间包流场模拟研究及优化  

Flow field simulation and optimization of multi-strand tundish

作　　者：赵占山 王诗 任涛 李毅 张忠福 王庆 ZHAO Zhan-shan;WANG Shi;REN Tao;LI Yi;ZHANG Zhong-fu;WANG Qing(ESP Department,Rizhao Steel Holding Group Co.,Ltd.,Rizhao 276806,Shandong,China)

机构地区：[1]日照钢铁有限公司ESP制造部,山东日照276806

出　　处：《连铸》2022年第5期23-29,49,共8页Continuous Casting

摘　　要：为了减少多流中间包的卷渣概率、提高对夹杂物的去除能力,采用物理模拟及数值模拟的方法对某钢厂六流中间包内部流场特性进行分析和优化。研究表明,导流孔仰角对中间包内流场及温度场有较大影响。改进后的挡墙使用25°仰角导流孔使各流最大温差由5.2℃降至2.4℃。较小的导流孔仰角对夹杂物去除有利,25°的仰角各流均匀性较好。提高挡坝高度亦有利于夹杂物上浮,推荐的挡坝高度为650 mm。另外建议现场浇注高度保持在100 mm以上以消除卷渣现象的不利影响。In order to reduce the probability of slag rolling and improve the removal ability of inclusions,the internal structure of multi-strand tundish in a steel plant was optimized by physical simulation and numerical simulation.The results show that the elevation angle of the diversion hole has a great influence on the flow field and temperature field in the tundish.The improved retaining wall uses 25°elevation diversion holes to reduce the maximum temperature difference of each flow from 5.2℃to 2.4℃.The smaller elevation angle of the diversion hole is beneficial to the removal of inclusions,and the flow uniformity at the elevation angle of 25°is better.Increasing the dam height is also conducive to the floating of inclusions.The recommended dam height is 650 mm.In addition,it is recommended to keep the pouring height above 100 mm to eliminate the adverse effect of slag entrapment.

关 键 词：中间包模拟 控流装置 夹杂物 流场 卷渣 

分 类 号：TF777[冶金工程—钢铁冶金]