论文部分内容阅读
建立1∶3的中间包水力学模型,对中间包内钢液流场进行物理模拟,通过软件计算获取流体的活塞区、全混区和死区的体积比例,确定中间包内最优流动行为的方案。试验研究表明,在中间包基本结构流量分别为0.7、0.8、0.9 m~3/h时,其死区比例分别为31.0%、17.3%、15.0%;而挡坝向挡墙方向内移30 mm时,流量分别为0.7、0.8、0.9 m~3/h,其死区比例分别为28%、10.5%、7.5%。因此,提高拉速可以降低中间包内的死区比例;另外,钢包长水口插入深度分别为150、280、315 mm的3组结果表明,插入深度280 mm较为合理,增大或减小插入深度均导致死区比例增大。
The 1: 3 tundish hydraulics model was established to simulate the flow field in the tundish. The volume ratio of the piston, the all-mixed zone and the dead zone was obtained through software calculation to determine the optimal flow behavior in the tundish Program. The experimental results show that the dead zones are 31.0%, 17.3% and 15.0% respectively when the basic structure flow of the tundish is 0.7, 0.8 and 0.9 m ~ 3 / h, respectively. However, the displacement of the dam to the retaining wall is 30 mm , The flow rates were 0.7, 0.8 and 0.9 m ~ 3 / h respectively, and the dead zones were 28%, 10.5% and 7.5% respectively. Therefore, increasing the pulling speed can reduce the dead zone ratio in the tundish. In addition, the three sets of results of inserting the ladle shunts into the depths of 150, 280 and 315 mm respectively show that inserting the depth of 280 mm is more reasonable, increasing or decreasing the insertion depth All lead to the proportion of dead zone increases.