东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (10): 1442-1446.DOI: 10.12068/j.issn.1005-3026.2014.10.017

• 材料与冶金 • 上一篇    下一篇

感应加热中间包夹杂物的运动及去除

王强1,石月明2,李一明1,李宝宽1   

  1. (1. 东北大学 材料与冶金学院, 辽宁 沈阳 110819; 2. 沈阳鼓风机集团股份有限公司, 辽宁 沈阳 110869)
  • 收稿日期:2013-10-29 修回日期:2013-10-29 出版日期:2014-10-15 发布日期:2014-05-19
  • 通讯作者: 王强
  • 作者简介:王强(1989-),男,江西吉安人,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:
    国家自然科学基金资助项目(51210007).

Inclusions Behavior and Removal in Tundish with Induction Heating

WANG Qiang1, SHI Yueming2, LI Yiming1, LI Baokuan1   

  1. 1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China; 2. Shenyang Blower Works Group Co.,Ltd., Shenyang 110869, China.
  • Received:2013-10-29 Revised:2013-10-29 Online:2014-10-15 Published:2014-05-19
  • Contact: LI Baokuan
  • About author:-
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摘要: 针对某钢厂双通道式感应加热中间包,建立了三维非稳态数学模型来研究感应加热中间包内夹杂物的运动行为和去除率.从力平衡原理出发,采用欧拉-拉格朗日方法分析了感应加热中间包内夹杂物的运动行为.建立了感应加热情况下夹杂物碰撞长大的数学模型,考察了夹杂物碰撞长大对其去除率的影响.结果表明,钢液流过通道受到紧箍作用,夹杂物会受电磁压力作用而向通道壁面运动,有利于夹杂物的去除;碰撞长大能够显著提高小粒径夹杂物的去除率;感应加热有助于夹杂物的去除,尤其是小粒径夹杂物.

关键词: 感应加热, 中间包, 夹杂物, 碰撞长大, 电磁压力

Abstract: A threedimensional transient mathematical model was developed to investigate the inclusions movement and removal in the continuous casting tundish with channeltype induction heating. According to the force balance, the inclusion movement behavior was investigated by EulerLagrange approach. A mathematical model was established for the collision and coalescence of inclusions in tundish with different induction heating powers, and the effect of collision and coalescence of inclusions on the removal ratio was investigated. The results showed that the inclusions will be subjected to an electromagnetic pressure force when molten steel flows pass the channel and move to the channel wall, which is beneficial to the removal of inclusions. Collision and coalescence improve remarkably the removal ratio of small inclusions. The induction heating is beneficial to the inclusion removal, especially for the small inclusions.

Key words: induction heating, tundish, inclusion, collision and coalescence, electromagnetic pressure force

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