Numerical Investigation of Arc-Pool-Metal Vapor Behavior in GTAW with an External Magnetic Field

被引：6
作者：
Han, Yu [1 ]
Chen, Ji [1 ]
Li, Linqi [1 ]
Wang, Lin [1 ]
Wu, Chuansong [1 ]
机构：
[1] Shandong Univ, Inst Mat Joining, Minist Educ, Key Lab Liquid Solid Struct Evolut & Mat, Jinan 250061, Peoples R China
来源：
METALS | 2020年 / 10卷 / 09期
基金：
中国国家自然科学基金;
关键词：
gas tungsten arc welding; external magnetic field; arc behavior; metal vapor; numerical analysis; HEAT; FLOW;
D O I：
10.3390/met10091199
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Gas tungsten arc welding with an external magnetic field is proven to suppress weld defects while improving welding speed. A three-dimensional numerical model that considers interactions among the arc plasma, weld pool, metal vapor, and external magnetic field is developed. The influences of the external magnetic field and metal vapor on arc and weld pool behaviors are investigated. The external magnetic field has an important influence on the arc shape and the weld pool flow field. The metal vapor increases the arc radiation loss but decreases the conductivity and local current density.
引用
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页码：1 / 22
页数：22
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