六流连铸中间包结构优化的水模型实验

Water Model Study on Optimization of Internal Structure in Six Strand Continuous Casting Tundish

采用相似比为1∶3的水模型,对莱钢六流连铸中间包流场进行模拟研究。研究结果表明:原型中间包内存在明显的短路流和旁路流,死区比例较大,混匀效果差,通过对挡墙结构和湍流抑制器的优化设计,使中间包流场得到明显改善。其中"V"字挡墙配改造2型湍流抑制器效果最佳,可使近水口的滞止时间增加约1倍,死区比例降低70%左右。

The water model with 1 ： 3 ratio was built for studying on the flow field of Lai Steel six strand continuous casting tundish. The results showed that short road flow and side road flow were found in the original tundish, the volume of dead zone is large and the effect of mixing is bad. The flow field characteristics of the optimal tundish were improved remarkably by setting up proper turbulence inhibitor and baffle. It could get optimal effects that the ＂V＂ shape baffle and ameliorated turbulence inhibitor were used together. The minimum retention time for near nozzle strand is increased about one time and the volume of dead zone is decreased by 70%.