采用数模对马钢异型坯的中间包冶金性能进行研究，分析了中间包的流场，钢水平均停留时间，夹杂物的运动规律。计算结果表明，现场使用的无流动控制的中间包，１流区域钢水流动缓慢，３流和４流有明显的短路流，夹杂上浮排除率较低。加入档墙后，消除了３、４两流的短路流，夹杂上浮排除率增加，中间包的冶金性能有明显地改进 The metallurgical properties of tundish of Masteel blank were studied by numerical simulation. The flow field of tundish, the average residence time of molten steel and the movement of inclusions were analyzed. The calculated results show that the flow-controlled tundish used in the field has a slow flow of molten steel in the first flow zone, a clear short-circuit flow in the third flow and the fourth flow, and a lower inclusion inclusion floating rate. After adding the file wall, eliminating the short circuit flow of 3, 4 and 2 streams, inclusion floating up the exclusion rate increased, the tundish metallurgical performance has significantly improved