双流板坯中间包流场优化的物理模拟研究

详细信息    查看全文 | 推荐本文 |

英文篇名：Study on Physical Simulation for Flow Field Optimization in Tundish for Two-strand Slab 作者：刘崇林 ; 崔衡 ; 李源源 ; 邓深 ; 安航航 英文作者：Liu Chonglin;Cui Heng;Li Yuanyuan;Deng Shen;An Hanghang;Guangxi Liuzhou Iron and Steel (Group) Company;Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing;Engineering Research Institute,University of Science and Technology Beijing; 关键词：中间包 ; 流场优化 ; 物理模拟 ; 结构设计 英文关键词：Tundish;;Flow field optimization;;Physical simulation;;Structural design 中文刊名：YJSB 英文刊名：Metallurgical Equipment 机构：广西柳州钢铁集团有限公司;北京科技大学钢铁共性技术协同创新中心;北京科技大学工程技术研究院; 出版日期：2019-06-15 出版单位：冶金设备 年：2019 期：No.251 语种：中文; 页：YJSB201903003 页数：7 CN：03 ISSN：11-2183/TF 分类号：13-19

摘要

以国内某厂所用双流中间包为研究对象,采用物理模拟的手段对不同控流装置下中间包内的流场进行模拟研究,水模型实验采取1:3的比例进行。实验结果表明:双流浇注时原型中间包死区比例为30. 9%、滞止时间为25. 8s、平均停留时间为358. 3s,单流浇注时原型中间包死区比例为38. 6%、滞止时间为19. 7s、平均停留时间为354. 6s,钢液流动性差;双流浇注时,增加挡坝结构可以明显地减少死区比例,延长滞止时间,死区比例降低为20. 8%、平均停留时间增加为410. 6s;单流浇注时,内弯型和外弯型弯曲水口加挡坝的组合将死区比例分别减少至20. 1%和23. 1%,平均停留时间延长至442. 5s和425. 6s,采用挡墙将未开浇一侧隔开,组合挡坝结构,也能明显减少死区比例,其中效果最好时,死区比例降低为25. 1%。
        Taking the two-strand tundish used by a domestic factory as the research object,physical simulation was used to simulate the flow field in tundish with different flow control devices. The water model experiment was conducted in a 1: 3 ratio test. The experimental results show that the ratio of the dead zone of the prototype tundish is 30. 9%,the stagnation time is 25. 8 s and the average dwell time is 358. 3 s. The ratio of the prototype tundish dead zone is 38. 6% and the stagnation time is 19. 7 s,the average residence time is 354. 6 s,the molten steel fluidity is poor; when double-flow pouring,increasing the dam structure can significantly reduce the dead zone ratio and prolong the stagnation time,the dead zone ratio is reduced to 20. 8%,and the average residence time is increased to 410. 6 s. In the single-flow casting,the combination of the inner curved type and the outer curved nozzle plus the dam reduces the dead zone ratio to 20. 1% and 23. 1%,respectively,and the average residence time is extended to 442. 5 s and 425. 6 s,and the retaining wall will not be opened. The side of the pouring is separated,and the structure of the dam is combined to reduce the proportion of the dead zone. When the effect is best,the proportion of the dead zone is reduced to 25. 1%.

引文

[1]方瑞,雷少武,王建军.七流中间包的结构优化与数值模拟[J].炼钢,2018,34(06):15-22.
    [2]陈军利,郝阳,李任春,李太全.邯钢32t 8流连铸中间包流场的优化研究[J].特殊钢,2017,38(01):13-17.
    [3]曾红波,艾新港,贺家伟,张倍恺,刘泳鸿,黄仁和,牛文杰.单流中间包挡墙对夹杂物去除速率的影响[J].辽宁科技大学学报,2018,41(03):168-172.
    [4]翟晓毅,颜慧成,杨海滨,肖国华,谷风龙,仇圣桃,俞占扬.八流中间包结构优化水模型试验研究[J].炼钢,2018,34(01):25-29.
    [5]安航航,韩传基,陶金明,司马锦,孙彦辉,李博. 4流大方坯45t中间包流场的物理模拟和冶金效果[J].特殊钢,2012,33(02):1-5.
    [6]SAHAI Y,EMI T. Melt flow characterization in continuous casting tundish[J]. ISIJ Int,1996,36(6):667-672.