感应加热中间包夹杂物的运动及去除  

Inclusions Behavior and Removal in Tundish with Induction Heating

作　　者：王强[1] 石月明[2] 李一明[1] 李宝宽[1] 

机构地区：[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

出　　处：《东北大学学报（自然科学版）》2014年第10期1442-1446,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51210007)

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.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.

关 键 词：感应加热 中间包 夹杂物 碰撞长大 电磁压力 

分 类 号：TF777[冶金工程—钢铁冶金]