单流板坯连铸中间包结构优化

通过对单流板坯连铸中间包的水模实验,研究了不同控流装置对中间包流动特性的影响.研究结果表明,堰、坝的尺寸和位置与湍流控制器(TI)的结构对中间包流动特性影响很大,在该中间包内使用不带顶檐的湍流控制器效果好于带顶檐的湍流控制器.与原方案中间包结构相比,优化后的中间包的流体流动特性得到很大改善,最小停留时间和峰值时间分别从64s和81 s提高到了81 s和163 s,平均停留时间从237s延长到了314 s,死区体积分数从35%降低到了14%,降低了60%.

Optimization of One-Strand Tundish Configuration in Slab Continuous Casting

Water model experiment of a one-strand slab tundish in continuous casting was carried out to study the effect of different control devices on the flow characteristics in the tundish.The results showed that the location and the size of weir and dam and the shape of the turbulence inhibitor(TI) have a great effect on the flow characteristics.Using of the turbulence inhibitors without top extending lip can improve the flow better than that with top extending lip in the tundish.Compared with the former tundish configuration,the flow characteristics are improved to a great extent in this optimal one.Minimum residence time,peak concentration time and average residence time are increased from 64 s,81 s and 237 s to 81 s,163 s and 314 s,respectively.The fraction of dead zone volume decreases from 35% to 14%,being reduced by 60%.