Abstract: In light of the structure and technics parameters of the three-strand 220 mm X 220 mm square billet continuous casting tundish in TISCO, fluid flow field and temperature field of the tundish are mathematically simulated with the software ANSYS FLUENT. The results show that the flow of prototype tundish is unreasonable, the short circuit flow and the dead zone exist in the No. 2 strand, and the similarity among the various stands is poor. The optimization schemes have formed weirs in the pouring area to form flow buffer zones. Thus the steel flow is redistributed. The flow field consistency has been greatly improved. After the optimal schema was applied to the site, the number of inclusions in the No. 1 and the No. 2 strand was reduced by 9.51% and 23.52% respectively, and the difference between strands was reduced by 52. 72%. The number of inclusions and the difference between strands were significantly reduced.

摘要： 根据太钢三流220mm×220mm方坯连铸中间包结构和工艺参数,利用ANSYS FLUENT数值模拟软件对该中间包流场和温度场进行模拟研究。结果表明,原型中间包流场不合理,第2流钢液存在短路流和死区,各流一致性较差。优化方案通过在浇注区设立挡墙,形成钢流缓冲区,钢液重新分配,流场一致性得到了大幅度改善。最优方案应用于现场后,相对于原方案第1、2流夹杂物数量分别降低了9.51%、23.52%,流间夹杂物数量差异降低了52. 72%,两流夹杂物数量和流间夹杂物数量差异都明显降低。