摘要
针对自由燃烧的TIG焊电弧,建立了二维轴对称数学模型,对稳态TIG焊电弧进行了数值分析,获得电弧的温度场、压力场、流场等分布规律。结果表明:电弧最高温度出现在钨极下方,电弧轴向和径向的温度随钨极和电弧中心之间距离的增加而降低;等离子体速度在电弧中心处达到最大值;阳极表面上的电弧压力随其离阳极中心距离的增大而降低;减小焊接电流可大幅度降低电弧温度、等离子体速度和电弧压力;减小电弧弧长可降低等离子体速度和电弧压力。
A two-dimensional axisymmetric mathematical model is developed to simulate the free-burning TIG welding arc. By analyzing, the temperature, pressure and flow fields of the arc are obtained. The results show: The maximum arc temperature appears beneath the tungsten electrode, and the temperature in the axial and radial direction decrease with increasing tungsten electrode distance and arc center distance;The plasma velocity reaches a maximum at the center of the arc;The arc pressure on the anode surface decreases with increasing distance from the arc center;Reducing the welding current can greatly reduce the arc temperature, plasma velocity and arc pressure;Reducing the arc length reduces the plasma velocity and arc pressure.
作者
郭朝博
崔露露
陶凯
王会敏
GUO Chao-bo;CUI Lu-lu;TAO Kai;WANG Hui-min(School of Materials Science and Engineering,Henan Institute of Technology,Xinxiang 453003,China;Henan Engineering Research Center for Modification Technology of Metal Materials,Xinxiang 453003,China;Library,Henan Institute of Technology,Xinxiang 453003,China)
出处
《河南工学院学报》
CAS
2020年第1期60-64,共5页
Journal of Henan Institute of Technology
基金
河南省科技攻关项目(182102210260)
高等学校重点科研项目基础研究专项计划(20B430003)。
关键词
TIG焊
电弧
数值模拟
TIG welding
arc
numerical simulation
