圆坯连铸机中间包流场流动特性研究  

Research on Flow Field Characteristics in Tundish of Round Billet Caster

作　　者：熊洪进 陈列 董贵文 Xiong Hongjin;Chen Lie;Dong Guiwen(Jianlong Beiman Special Steel Co.,Ltd,Technology Center,Qiqihaer,161041,Heilongjiang,China)

机构地区：[1]建龙北满特殊钢有限责任公司技术中心,黑龙江齐齐哈尔161041

出　　处：《特钢技术》2021年第1期1-9,共9页Special Steel Technology

摘　　要：根据相似原理,对三流中间包建立了几何比例为1:3的水力学模拟,通过改变挡墙导流孔倾角、高度和不同形状的抑制器,比较分析了不同的内部结构对中间包的滞止时间、死区比例等影响。试验表明:原型中间包流场不合理,死区比例高达41.08%。通过改变导流孔高度可以弥补原型中间包结构的不足,滞止时间由原型的14.67s缩小至4.67s,各流一致性显著提高。在现有工艺和中间包内腔结构条件下,将导流孔整体上移30mm,上下导流孔倾角分别为10°、20°,使用方形抑制器时,可有效增加流体停留时间,降低死区比例。According to the similitude principle,1:3.0 water mechanical model has been established for tundish,The influence of different internal structures on the stagnation time and dead zone ratio of tundish were ana⁃lyzed by changing the angle and height of the guide hole of the retaining wall and changing the shape of the suppres⁃sor.The results showed that the flow field in the prototype tundish was unreasonable,and the dead zone ratio was as high as 41.08%.The defects of the original tundish structure can be eliminated by changing the height of the diver⁃sion hole,the stagnation time of the prototype is reduced from 14.67s to 4.67s,the consistency of each flow was signif⁃icantly improved.Under the existing process and tundish inner cavity structure conditions,the whole diversion hole was moved up 30mm,and the inclination angles of the upper and lower diversion holes were 10°and 20°respective⁃ly.By using a square suppressor,the fluid residence time could be effectively increased and the dead zone ratio was reduced.

关 键 词：相似原理 中间包 流场 水模拟 

分 类 号：TF777.9[冶金工程—钢铁冶金]