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根据相似原理,针对某钢厂四流中间包建立1∶2.5的物理模型,模拟钢液在原包内的流动情况,并研究弧形开孔导流墙和弧形开槽导流墙对中间包内钢液流动的影响。水模实验结果表明,由于原包冲击区域较小,导致各流最小停留时间和峰值时间较小,死区比例较高,不利于连铸生产的顺利进行。中间包控流装置采用弧形开孔导流墙和湍流控制器优化后,中间包冲击区体积变大,对两端的控流能力增强,流体在中间包内的流动情况得到很大改善。优化后1、2流死区比例分别减少了12.3%、12.1%,平均停留时间分别提高39 s、52 s。
According to the similar principle, a 1: 2.5 physical model was established for the fourth-flow tundish of a steel mill to simulate the flow of the molten steel in the original bag and to study the effect of the arc-shaped perforated guide wall and the curved slotted guide wall on the tundish The impact of the flow of molten steel. The results of water modeling experiments show that the minimum residence time and peak time of each stream are small, and the proportion of dead zone is high, which is not conducive to the smooth progress of continuous casting production. After optimization of the tundish flow control device with the arc-shaped orifice dredging wall and the turbulent flow controller, the impact volume of the tundish becomes larger, the flow control ability of the tundish is enhanced, and the fluid flow in the tundish is greatly improved. After optimization, the proportion of flow dead area decreased by 12.3% and 12.1% respectively, and the average residence time increased by 39 s and 52 s respectively.