东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (8): 1151-1154.DOI: -

• 论著 • 上一篇    下一篇

新型电磁制动下漏斗形结晶器流场的数值模拟

田溪岩;李本文;赫冀成;   

  1. 东北大学材料电磁过程教育部重点实验室;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-08-15 发布日期:2013-06-22
  • 通讯作者: Li, B.-W.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(10772044)

Numerical simulation of new-type EMBR for flow field in funnel shape mold

Tian, Xi-Yan (1); Li, Ben-Wen (1); He, Ji-Cheng (1)   

  1. (1) Key Laboratory of Electromagnetic Processing of Materials Ministry of Education, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-08-15 Published:2013-06-22
  • Contact: Li, B.-W.
  • About author:-
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摘要： 针对薄板坯漏斗形结晶器宽侧壁形状的不规则性,设计了新型全幅一段电磁制动装置.通过改变其在竖直方向的位置高度和磁通势(电流和匝数乘积)的大小,采用数值模拟的方法分析了电磁制动作用下钢液流场分布.结果显示,两种参数的改变对磁场分布趋势的影响不大,结晶器内的磁场分布不均匀,最大磁感应强度的区域位于磁场中心位置略向下靠近结晶器窄壁处.通过与未施加电磁力的结果比较,电磁制动的位置高度在250~300 mm,磁通势为8 000 A或以上时,结晶器内的钢液流股被抑制,流场情况得到显著改善.

关键词: 薄板坯, 新型电磁制动装置, 数值模拟, 漏斗形结晶器, 流场

Abstract: A new-type EMBR (electromagnetic brake) was specially designed for the funnel shape mold during thin slab casting because of the irregularity of the wide walls of such molds. Numerical simulations were carried out to predict the liquid steel flow under the action of the EMBR of which the positional height and magnetomotive force (the number of winding turns multiplied by the current passing through the winding) have both been changed. The results showed that the two changed parameters have slight influence on the trend of magnetic field distribution, and the distribution is heterogeneous in mold. And it was found that the region where the magnetic induction is maximum is slightly below the center of magnetic field and close to the inner surface of narrow wall of the mold. Compared with the mold without electromagnetic force exerted on it, the results showed that the liquid steel flow strands can be inhibited so as to improve the flow field greatly if the height of the new-type EMBR is in the range from 250 mm to 300 mm and the magnetomotive force are 8000 A or higher.

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