摘要
中间包配置感应加热器后的结构与原型中间包结构差异较大,不宜使用常规添加挡墙、挡坝或稳流器的方式优化流场。针对国内典型5流通道式感应加热中间包分流过热度高及边部流和中间流的温差大等问题,设计了改进方案,并通过数值模拟方法研究了不同结构的流钢通道对中间包流场和温度场的影响。结果表明,带有变径的分口式流钢通道的结构最佳,依此优化后的中间包各流间温差仅为1~2℃,各流示踪剂浓度的标准差仅为0.03,死区体积分数为16.6%,既保证了各流间钢液的均匀性,也有利于夹杂物上浮去除,改善了中间包冶金效果。
Structure of tundish equipped with induction heater is quite different from that of prototype tundish, so the flow field can not be optimized simply by adding retaining walls, dams or current stabilizers. Aiming at the problems of large temperature difference between side strand and middle strand and high superheat degree of casting in domestic 5-channel induction heating tundish, several schemes were designed, and their flow field and temperature field were compared by numerical simulation. The flow field of induction heating tundish needs to be re-optimized. In this paper, the effect of different channel structures on tundish flow field is studied. The results show that the structure of the split channel structures with variable diameter is the best. After optimization of tundish structure, the temperature difference between each strand is only 1~2 ℃, the standard deviation of tracer concentration is only 0.03, and the volume fraction of dead zone is only 16.6%. It not only ensures the uniformity of molten steel among flows, but also helps to remove inclusions and improve the metallurgical effect of tundish.
作者
肖红
徐辉
何浩
李伟红
易兵
XIAO Hong;XU Hui;HE Hao;LI Wei-Hong;YI Bing(Hunan Zhongke Electric Co.,Ltd.,Yueyang 414000,Hunan,China;Henan Jiyuan Iron and Steel(Group)Co.,Ltd,Jiyuan 459000,Henan,China)
出处
《中国冶金》
CAS
北大核心
2021年第1期14-19,共6页
China Metallurgy
基金
国家重点研发计划资助项目(016YEB0601302)。
关键词
感应加热
中间包
流钢通道
流场优化
数值模拟
温度
induction heating
tundish
channel
optimization of flow field
numerical simulation
temperature
