纵向磁场在磁控电弧技术中的应用研究  

Application research of longitudinal magnetic field in magnetic control arc welding technology

作　　者：张新[1] 王振民[1] 李远茂 徐德祥[1] 李孟[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《电焊机》2013年第12期38-42,共5页Electric Welding Machine

基　　金：国家自然科学基金项目(50805051);广东省科技计划项目(2011B090400081);中央高校基本科研业务费项目(2012ZZ0059)

摘　　要：针对焊接电弧由于气流的不均匀、工件的不平滑等导致的能量不均匀,基于电场与磁场的可作用性,采用外加纵向磁场来实现等离子体射流的匀质化。分析纵向磁场作用下TIG焊电弧瞬时形态的特点,并根据旋转电弧对工件作用区域的变化特征,论述了纵向磁场影响电弧形态和焊缝成形的机理,重点分析影响纵向磁场分布的因素进。通过磁场发生器,改变电弧的形态和运动特性,验证磁控等离子体能量的均质化。Unevenness of airflow and workpieces in welding arc would result in the uneven energy,and electric and magnetic filed plays an important role in magnetic control arc technologies,so this paper design to add extra longitudinal magnetic field to make uniformity of plasma jet,which also analyzes the characteristics of the TIG welding arc in longitudinal magnetic filed. In accordance of the changes of the rotating arc workpiece for reginal characteristics,this paper discussed the mechanism that how longitudinal magnetic field influenced the arc shape and weld shape. Factors of longitudinal magnetic field distribution will be analyzed to prove homogenization of magnetic control plasma energy by changing the shape and movement characteristics of electric arc with magnetic field generator.

关 键 词：等离子体 TIG 纵向磁场 

分 类 号：TG403[金属学及工艺—焊接]