360mm×450mm方坯连铸结晶器电磁搅拌的数值模拟  

Numerical Simulation for Electromagnetic Stirring of Mold for 360 mm×450 mm Bloom Concasting

作　　者：陈永[1,2] 朱苗勇[1] 任兵芝[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004 [2]攀枝花钢铁研究院材料所,攀枝花617000

出　　处：《特殊钢》2008年第5期4-6,共3页Special Steel

摘　　要：根据麦克斯韦电磁理论,建立了360 mm×450 mm方坯连铸结晶器电磁旋转搅拌的数学模型,分析了结晶器内电磁场、电磁力的分布特征以及电流(300～700 A)、搅拌频率(2.0～3.0 Hz)对电磁场和电磁力的影响。结果表明,旋转磁场在结晶器搅拌区域内产生电磁力,使钢液在水平方向形成旋转流动;磁感应强度与搅拌电流成线性关系,在低频率搅拌条件下频率对电磁搅拌强度的影响较小。According to Maxwell electromagnetic field theory a mathematical model for simulating the mold electromagnetic rotary stirring for 360 mm × 450 mm bloom eoneasting has been established to analyze the distribution characteristics of magnetic flux density and electromagnetic stirring force, and the effect of current strength （300 -700 A） and stirring frequency （2.0 - 3.0 Hz） on flux density and stirring force. Results show that the rotary magnetic field can generate the electromagnetic force in mold to make molten steel whirling at horizontal section; the relation between magnetic flux intensity of induction and stirring current is linearity, and with lower stirring frequency the effect of frequency on electromagnetic stirring intensity is slight.

关 键 词：大方坯连铸 结晶器电磁搅拌 磁场 数值模拟 

分 类 号：TF341.6[冶金工程—冶金机械及自动化]