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采用物理模拟方法对单管RH真空精炼过程流场的循环流动、混合特性等进行了研究,建立与RH真空精炼装置原型相似比为1∶5的水模型,研究了不同工艺参数对单管RH装置内钢液循环流动的影响。对比实验测量数据发现,增大吹氩量和浸渍管插入深度以及浸渍管有效横截面有利于提高循环流量,减小均混时间;在相同的实验条件下,椭圆形浸渍管RH比传统浸渍管RH的循环流量要大15%以上,单管RH的均混时间比传统RH可以缩短20%;单管RH钢包底部吹氩位置位于距钢包中心0.4R(R是钢包半径)处时,均混时间最短。
The physical simulation method was used to study the cyclic flow and mixing characteristics of the single-tube RH vacuum refining process. The water model was established with the prototype of RH vacuum refining equipment with a ratio of 1: 5. The effects of different process parameters on the single tube RH Impact of circulating fluid in the device. Comparing the experimental data, it is found that increasing the amount of argon blowing and the immersion tube insertion depth and the effective cross-section of the immersion tube are conducive to increasing the circulation flow rate and reducing the mixing time. Under the same experimental conditions, the elliptical immersion tube RH is better than the conventional immersion tube RH , The RH mixing time of single tube RH can be shortened by 20% compared with that of the traditional RH. When the position of argon blowing at the bottom of single-tube RH ladle is 0.4R (R is the ladle radius) from the ladle center, the mixing time The shortest.