沈阳工业大学学报2012，Vol.34Issue(3)：263-267,5.
纵向磁场作用下MIG焊电弧数值模拟
Numerical simulation of MIG welding arc under longitudinal magnetic field
摘要
Abstract
In order to improve the welding quality, a three dimensional finite element mathematical model for MIG arc under the longitudinal magnetic field was established. The ANSYS finite element analysis software was used to simulate the arc under the longitudinal magnetic field. In addition, the physical characteristics of the arc under the longitudinal magnetic field were obtained, and were compared with those obtained without imposing longitudinal magnetic field. The results show that with introducing the longitudinal magnetic field in the welding process, both temperature and pressure of the arc decrease remarkably, and the temperature gradient of the arc also reduces. When the welding current is 120 A and the ampere-turn of excitation coil is 1 000, the highest temperature at the center of arc decreases from 16 950 K to 13 700 K, and the maximum arc pressure reduces from 91 Pa to 57 Pa. On the surface of anode, the peak value of arc pressure decreases from 53 Pa to 20 Pa, and deviate from the arc axis. It is concluded that under the longitudinal magnetic field, the physical characteristics.of the arc change significantly, and the arc expands. Moreover, the temperature and pressure of the arc decrease, and the hollow arc forms at the center of the arc.关键词
纵向磁场/MIG焊/电弧/温度场/电弧压力/ANSYS软件/有限元/数值模拟Key words
longitudinal magnetic field/MIG welding/arc/temperature field/arc pressure/ANSYS software/finite element/numerical simulation分类
矿业与冶金引用本文复制引用
朱胜,王启伟,殷凤良,王晓明,梁媛媛..纵向磁场作用下MIG焊电弧数值模拟[J].沈阳工业大学学报,2012,34(3):263-267,5.基金项目
国家自然科学基金资助项目 （）
部委基金项目 （）
国防科技重点实验室基金项目 （）
