Numerical Simulation of Electromagnetic Field during Double-zone Induction Heating Process of Directional Solidification by HRS Method

Geng Xiaoqi; Zhang Xianglong; Xu Mang; Liu Guohuai; Wang Zhaodong

doi:10.15980/j.tzzz.2022.08.007

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Numerical Simulation of Electromagnetic Field during Double-zone Induction Heating Process of Directional Solidification by HRS Method
Vol. 42, Issue 8, Pages: 956-959(2022)
Published： 2022 ，
DOI： 10.15980/j.tzzz.2022.08.007

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Geng Xiaoqi, Zhang Xianglong, Xu Mang, et al. Numerical Simulation of Electromagnetic Field during Double-zone Induction Heating Process of Directional Solidification by HRS Method. [J]. Special Casting & Nonferrous Alloys 42(8):956-959(2022)
DOI：

Geng Xiaoqi, Zhang Xianglong, Xu Mang, et al. Numerical Simulation of Electromagnetic Field during Double-zone Induction Heating Process of Directional Solidification by HRS Method. [J]. Special Casting & Nonferrous Alloys 42(8):956-959(2022) DOI： 10.15980/j.tzzz.2022.08.007.

摘要

采用有限元方法模拟分析HRS法定向凝固双区感应加热过程的电磁场，研究电源参数、结构参数对磁场分布特征的影响。结果表明，双区感应加热过程中石墨发热体内的磁场分布不均匀，水冷环内部的磁场强度最小。随着电流强度减小以及电源频率增加，保温包内部的磁场强度降低。随着石墨发热体电导率以及厚度增加，磁场强度降低；石墨筒高度增加，保温包内磁场增大；设置短路环降低了保温包内部磁场强度。

Abstract

Finite element method was adopted to simulate and calculate the electromagnetic field during the double-zone induction heating process of directional solidification by HRS method

and the influence of power parameters and structural parameters on the magnetic field distribution characteristics was investigated. The results indicate that the magnetic field in the graphite heating unit is unevenly distributed during the double-zone induction heating process

and the magnetic field intensity inside the insulation baffle is the lowest. As the current intensity decreases and the power frequency increases

the internal magnetic field intensity in the insulation package is decreased. With the increase of conductivity and thickness of the graphite heating unit

the internal magnetic field intensity is decreased. As the height of the graphite tube increases

the internal magnetic field intensity is increased. In addition

the existence of the short circuit ring reduces the internal magnetic field intensity of the insulation package.