论文部分内容阅读
为获得良好的连铸大板坯表面质量和内部结构组织,我们用相似法进行了浸入式水口等有关计算和用正交设计法进行了水模试验,并取得了如下试验结果。(1)水从不同型式结构的浸入式水口中流入结晶器内的流动形式是按以下顺序接近于均匀(柱塞)流:直水口→两孔向下30°→两孔向下20°→两孔向下10°→两孔水平。(2)实机最好采用两孔水平至两孔向下10°之间的浸入式水口结构,适当控制其它工艺参数,最佳流股接近于均匀流,就能得到满意的表面质量和内部结构良好的大板坯。
In order to get a good surface quality and structure of slab continuous casting, we used the similar method to calculate the submerged entry nozzle and so on, and carried out the water test by the orthogonal design method. And we got the following test results. (1) The flow of water into the mold from submerged entry nozzles of different type structures is approximated by a uniform (plunger) flow in the following sequence: straight nozzle → two holes down 30 ° → two holes down 20 ° → Two holes down 10 ° → two holes level. (2) The actual machine is best to use two holes to the level of 10 degrees down between the two submerged nozzle structure, appropriate control of other process parameters, the best flow close to uniform flow, you can get a satisfactory surface quality and internal Good structure of the big slab.