玻璃包覆铜丝快速凝固感应加热磁场数值模拟

 建立了玻璃包覆铜丝快速凝固感应加热电磁场计算模型，借助MATLAB软件描述了圆柱形导体内电磁场分布规律。研究了感应线圈直径、锥度和匝数等参数对感应线圈内磁场分布的影响。结果表明: 随着感应线圈直径的增大，最大磁场强度降低；随着锥度的增大，线圈中最大磁场强度降低；随着感应线圈匝数增加，线圈中的最大磁场强度增加。扫描电镜和X射线衍射仪分析表明，实验制备的玻璃包覆铜丝的直径为18 mm、铜丝的直径为3.3 mm，玻璃包覆铜丝的表面质量及直径均匀性较好，铜以晶态形式存在，在［200］晶向具有明显的择优取向。

Magnetic field simulation of induction heating in glass-coated copper microwire rapid solidification process

The mathematical field model of induction heating was developed for the fabrication of glass-coated copper microwire. The skin effect in the long solid cylinder billet and distribution of electromagnetic field were described. Moreover, the figures of the electromagnetic and eddy current density were obtained with the MATLAB software. The effect factors of the distribution of electro-magnetic field were analyzed. The results show that the intensity of magnetic field decreases with diameters and numbers of induction coil increasing. The glass-coated copper microwire with a diameter of 18 mm and 3.3 mm of copper microwire in diameter was characterized by scanning electron microscope and X-ray diffraction.