塞棒抖动对浸入式水口流场的影响赵定国，李新，王书桓(华北理工大学冶金与能源学院，河北唐山063009).pdfVIP

塞棒抖动对浸入式水口流场的影响 赵定国， 李 新， 王书桓 (华北理工大学冶金与能源学院，河北 唐山 063009) 摘 要：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。 关键词：塞棒抖动；浸入式水口；流向；流速 文献标志码：A 文章编号：1005-4006 （2016 ）02-0032-04 Influence of stopper behavior on flow field in submerged entry nozzle ZHAO Ding-guo ， LI Xin ，WANG Shu-huan (School of Metallurgy and Energy ，North China University of Science and Technology ，Tangshan 063009 ，Hebei ，China) Abstract ：During the casting process ，the flow field in submerged entry nozzle was impacted by stopper jitters. Water simulation method was used to study the stability of flow field in submerged entry nozzle(SEN) under different stopper opening degree and SEN inserted depth into the mold. The results showed that when the opening degree is 5 mm and 10 mm ，the flow velocity distribution was very uneven ；when the opening degree is 15 mm and 20 mm ，the flow velocity was more evenly distributed. The SEN inserted into the mold at a depth of 100 mm and 150 mm ，the immersion nozzle flow velocity was unevenly distributed ，but when the depth was 200 mm and 250 mm ，the flow velocity was stable. The larger opening degree is ，the more stable flow velocity distributed ；the larger insertion depth ，the more stable flow ve- locity distributed. The stable flow field helps reduce nozzle clogging and stopper erosion. Key words ：stopper jitters ；submerged entry nozzle ；flow direction ；flow velocity 塞棒是连铸过程中重要的控流元件之一，控制 针对浇铸过程中塞棒抖动现象，