电磁软接触连铸高频磁场的数值模拟  

Numerical simulation of high frequency magnetic field for electromagnetic soft-contact continuous casting

作　　者：夏小江[1] 王宏明[1] 戴起勋[1] 李桂荣[1] 赵玉涛[1] 

机构地区：[1]江苏大学材料学院,镇江212013

出　　处：《中国有色金属学报》2008年第3期529-534,共6页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(50474037);江苏省自然科学基金资助项目(BK2006078);江苏省高校自然科学研究计划资助项目(05KJD450043)

摘　　要：以经典电磁场理论为依据，利用有限元软件ANSYS建立了电磁软接触连铸高频磁场计算的数学物理模型。用小线圈法实测了线圈内磁感应强度的分布，并将实测值与计算值进行比较，验证了模型的有效性。通过计算，分析了割缝结晶器内磁感应强度分布的不均匀性以及感应线圈匝间距对结晶器内磁感应强度分布的影响。结果表明：切缝对结晶器中半径小于25mm范围的影响很小，使接近结晶器壁处圆周上磁感应强度分布的不均匀性较大；减小线圈匝间距可以提高结晶器内磁感应强度，线圈匝间距以5～10mm为宜。Based on electromagnetism theory, a physical and mathematical model of electromagnetic continuous casting was developed through ANSYS software. The distribution of magnetic induction density （B） in the coil was measured through the little coil method. By comparing the measured value with the calculated results, the validity of calculating the electromagnetic field through the model was proved. The ununiformity orb distribution in slit mould was analyzed. The results show that the effect of slit on the B distribution in the area with radius smaller than 25 mm is unconspicuous, and the ununiformity orb distribution in the area close to the mould wall is much remarkable. The effect of distance between coil circles on the B distribution was also studied. The results show that the magnetic induction density increases by decreasing the distance between coil circles, and the better distance between cow circles is 5-10 mm.

关 键 词：电磁软接触连铸 高频电磁场 数值模拟 

分 类 号：TG249.7[金属学及工艺—铸造] TG111.4