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连铸浇铸过程中采用塞棒控流,存在塞棒抖动影响浸入式水口流场的问题。利用水模拟的方法,研究塞棒开启高度、浸入式水口插入结晶器深度对浸入式水口内流场的影响。实验结果表明:塞棒开启高度为5、10 mm时,浸入式水口内流速分布不均匀,受塞棒抖动影响较大;塞棒开启高度为15、20 mm时,浸入式水口内流速分布比较均匀,受塞棒抖动影响较小;浸入式水口插入结晶器深度为100、150 mm时,浸入式水口内流速分布不均匀,受塞棒抖动影响较大;插入深度200、250 mm时,流速分布比较均匀,受塞棒抖动影响较小;塞棒开启高度越高、水口插入结晶器深度越大,水口流速越均匀,受塞棒抖动影响越小。均匀稳定的水口流场有利于减少水口结瘤和塞棒侵蚀。
In the process of continuous casting and casting, the flow of stopper rod is used to control the flow field of the submerged nozzle due to the jitter of stopper rod. The effect of plug opening height and immersion nozzle insertion depth on the flow field in submerged entry nozzle was studied by using water simulation method. The experimental results show that the velocity distribution of the submerged entry nozzle is not uniform and the jitter of the slug is greatly affected when the opening height of the slug is 5 and 10 mm. Uniform and less affected by the jitter of the stopper rod. When the immersion nozzle was inserted into the mold at a depth of 100 and 150 mm, the velocity distribution in the immersion nozzle was not uniform and was greatly influenced by the jitter of the stopper rod. When the penetration depth was 200 and 250 mm, Distributed more evenly, less affected by the jitter of the stopper rod; the higher the stopper stopper opening height, the greater the nozzle insertion mold depth, the more uniform the nozzle flow, the less affected by the stopper rod jitter. A uniform and stable nozzle flow field is conducive to reducing nozzle nodules and stopper erosion.