东北大学学报(自然科学版) ›› 2021, Vol. 42 ›› Issue (12): 1724-1730.DOI: 10.12068/j.issn.1005-3026.2021.12.008

• 材料与冶金 • 上一篇    下一篇

蝶式感应加热中间包流场与升温特性

王宁, 李宝宽, 齐凤升, 张晓明   

  1. (东北大学 冶金学院, 辽宁 沈阳 110819)
  • 修回日期:2021-03-18 接受日期:2021-03-18 发布日期:2021-12-17
  • 通讯作者: 王宁
  • 作者简介:王宁(1994-),男,山西太原人,东北大学博士研究生; 李宝宽(1963-),男,辽宁辽阳人,东北大学教授,博士生导师.
  • 基金资助:
    -

Flow Field and Temperature Rising Characteristics of Butterfly Induction Heating Tundish

WANG Ning, LI Bao-kuan, QI Feng-sheng, ZHANG Xiao-ming   

  1. School of Metallurgy, Northeastern University, Shenyang 110819, China.
  • Revised:2021-03-18 Accepted:2021-03-18 Published:2021-12-17
  • Contact: LI Bao-kuan
  • About author:-
  • Supported by:
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摘要: 针对传统连铸设备中间包钢液入口与浇注口距离近无法安装感应加热装置的问题,设计出一种新型蝶式感应加热中间包,并建立三维非稳态磁-热-流耦合数学模型研究电磁场对蝶式中间包内流场和温度场的影响,得到感应加热功率与升温特性间的关系.结果表明,感应电流在中间包中形成闭合回路且主要集中在通道处.偏心电磁力使得钢液在通道内产生旋流并伴有较大切向速度,流出通道的钢液向浇注室上方运动.中间包过流量为2t/min时,无感应加热情况下出口温降为7K,而有感应加热情况下,当加热功率由600kW增至1000kW,出口温升由8K增至27K.

关键词: 蝶式感应加热中间包;电磁场;流场;温度场;升温特性

Abstract: In order to solve the problem that induction heating device can not be installed in the tundish of traditional continuous casting equipment, a new butterfly induction heating tundish was designed. A three-dimensional unsteady magnetic-thermal-flow coupling mathematical model was then established to study the effect of electromagnetic field on the flow and temperature fields in the butterfly tundish, revealing the relationship between induction heating power and temperature rising characteristics. The results showed that the induced current formed a closed loop in the tundish and was mainly concentrated in the channel. The eccentric electromagnetic force rendered the steel to spin in the channel with large tangential velocity, and the steel flowing out of the channel moved up to the casting chamber. When the flow rate of tundish was 2t/min and without induction heating, the outlet temperature drop was 7K. However, under induction heating, when the heating power increased from 600kW to 1000kW, the outlet temperature rise was elevated from 8K to 27K.

Key words: butterfly induction heating tundish; electromagnetic field; flow field; temperature filed; temperature rising characteristics

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