Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第18卷    第3期    总第108期    2008年3月

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文章编号:1004-0609(2008)03-0529-06
电磁软接触连铸高频磁场的数值模拟
夏小江1,王宏明1, 2,戴起勋1,李桂荣1,赵玉涛1

(1. 江苏大学 材料学院,镇江 212013;2. 上海大学 材料学院,上海 200072)

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25 mm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5~10 mm为宜。

 

关键字: 电磁软接触连铸;高频电磁场;数值模拟

Numerical simulation of high frequency magnetic field for
XIA Xiao-jiang1, WANG Hong-ming1, 2, DAI Qi-xun1, LI Gui-rong1, ZHAO Yu-tao1

1. School of Materials, Jiangsu University, Zhenjiang 212013, China;2. School of Materials, Shanghai University, Shanghai 200072, China

Abstract: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 of B 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 of B 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.

 

Key words: electromagnetic soft contact continuous casting; high frequency electromagnetic field; numerical simulation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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