中间包挡墙优化的数值模拟与实践

Application and numerical simulation on the wall design optimization for tundish

为了改善首钢三炼钢2号铸机铸坯夹杂物水平,对中间包挡墙结构进行了优化,并对中包内钢水流场进行了三维数值模拟,分析了钢水流场对去除夹杂物的影响。模拟及生产实绩表明:高挡墙方案均具有改善中包冶金效果,V形高挡墙方案安装使用过程结构稳定性更好,采用带导流孔的全挡墙钢水流场分布更加合理,有利于夹杂物的去除。

With the purpose to bring down the inclusions rating of the steel billets through effective tundish wall design, 3-D numerical simulations have been carried out on the flow dynamic processes in the tundish of No. 2 CC in the 3rd Steel Plant Shougang and the effect of the flow field of liquid steel on the removal of inclusions in steel analyzed. Results of simulation and actual production show that by installation of high walls in the tundish inclusions can be reduced and V-shaped wall is more dependable and by use of the full wall with flow guiding orifices the inclusions can be more effectively removed since the flow field of the liquid steel is more appropriately distributed in the tundish.