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针对宝钢特钢连铸坯生产过程中存在明显地卷渣问题,采用正交试验设计方法,对中间包内钢液流动过程进行数值模拟,研究了坝堰位置、坝堰高度、吹气量大小及吹气位置等因素对平均停留时间、死区体积、活塞区体积的影响,以期为中间包内钢液流场优化提供依据。结果表明:在正交优化的最佳方案基础上,吹气位置设置在离中间包入水口中心距离1700mm处时,死区比例小,活塞区体积大,平均停留时间长。
In order to solve the problem of obvious slag entrapment in the production process of Baosteel’s special steel slab, the numerical simulation of the flow of molten steel in the tundish was carried out by orthogonal experimental design method. The influences of the position of the dam, the height of the dam, Blowing position and other factors on the average residence time, dead volume, piston area volume, with a view to provide the basis for the optimization of the flow field of molten steel in the tundish. The results show that when the blowing position is set at a distance of 1700mm from the center of the tundish inlet, the proportion of dead zone is small and the volume of the piston area is large and the average residence time is long on the basis of orthogonal optimization.