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针对中间包夹杂物超标的问题,采用1∶2的水力学模型,对三流320 mm×480 mm大方坯中间包流场进行物理模拟,研究控流装置对钢液流动特性的影响,优化中间包流场。模拟结果表明:原型中间包存在着滞止时间短、死区比例大、持续流动的液体对中间包前壁不断的冲刷侵蚀的问题。采用方案3的挡墙与挡坝,滞止时间增加了18.05 s,且两个水口的滞止时间标准差仅为0.18,死区比例降幅为30.51%,很好地改善了液体的流动特性。
In order to solve the problem of excessive inclusions in the tundish, a 1: 2 hydraulic model was used to simulate the flow field in a tundish of 320 mm × 480 mm. The influence of the flow control device on the flow characteristics of the molten steel was studied. Flow field. The simulation results show that the prototype tundish has the problems of short erosion time, large proportion of dead zone and continuous flow erosion on the front wall of the tundish. With retaining wall and dams of scheme 3, the stagnant time increased by 18.05 s, and the standard deviation of the stagnant time of the two nozzles was only 0.18 and the proportion of dead zone decreased by 30.51%, which improved the liquid flow characteristics well.