不同电角度电磁搅拌器磁场分析  

Magnetic Field Analysis of Electromagnetic Stirrer with Different Electrical Angle

作　　者：贾华[1] 袁日栋 JIA Hua;YUAN Ridong(School of Information Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《铸造技术》2018年第12期2656-2659,共4页Foundry Technology

摘　　要：建立了描述结晶器电磁搅拌过程的电磁场二维数学模型,采用有限元的方法实现结晶器电磁搅拌不同电角度电磁场的数值模拟,研究了电磁场的分布特征及频率对金属熔体中心点电磁场的影响。结果表明,随着电角度的增大,磁场的均匀性增强,但在电角度为75°时,能得到最大电磁场参数;不同电角度下,金属熔体中心电磁场参数的变化规律基本相似;随着频率的增加,磁感应强度先增后减,最大磁感应强度对应的频率是3.5 Hz,而电流密度和电磁力均不断增大。A two-dimensional mathematical model of electromagnetic field describing the process of mold electromagnetic stirring was established. The numerical simulation of electromagnetic field with different electric angles of mold electromagnetic stirring was carried out by means of finite element method. The distribution characteristics of electromagnetic field and the influence of frequency on the electromagnetic field, the impact of the role was considered. The results show that the uniformity of the magnetic field increases with the increase of the electrical angle, but the maximum magnetic induction and the maximum electromagnetic force can be obtained when the electrical angle is 75°. At different electrical angles, the magnetic flux density, the variation of current density and electromagnetic force are basically similar. With the increase of frequency, the magnetic induction intensity firstly increase and then decrease, the turning frequency is 3.5 Hz, and the current density and electromagnetic force were increasing.

关 键 词：电磁搅拌 电角度 电磁力 频率 

分 类 号：TG243[金属学及工艺—铸造]