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在保证产量的情况下,为使夹杂物充分上浮去除,钢水温度均匀,进一步提高某钢厂320 mm×480 mm连铸方坯的生产质量,针对三流非对称中间包,设计1∶3水模拟试验和数值模拟,进行不同拉速和有无挡坝的研究。通过速度场和温度场的数值模拟以及不同拉速下的水模拟,可以发现,随着拉速的增加,三个水口的停留时间减小,并且三个水口的停留时间有一定差距。添加挡坝后随着拉速的增加,平均停留时间减小得更为缓慢。速度场和温度场的分布规律并不随拉速的变化而变化,但拉速的增加会使中间包内的速度和温度上升。
Under the condition of ensuring the output, in order to make the inclusions fully float up and remove, the temperature of the molten steel is even, to further improve the production quality of a 320 mm × 480 mm continuous casting billet of a steel mill. The 1: 3 water simulation is designed for the three-stream asymmetric tundish Tests and numerical simulations were carried out to investigate whether there were different rates of pull and without or without dam. Through numerical simulation of velocity field and temperature field and water simulation under different pumping speeds, it can be found that with the increase of pumping speed, the residence time of three nozzles decreases and the residence time of three nozzles has a certain gap. With the increase of pulling speed after adding dam, the average residence time decreases more slowly. The distribution of velocity field and temperature field does not change with the pulling speed, but the increase of pulling speed will increase the speed and temperature in the tundish.