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

Metals

Chuansong Wu¹  Ji Chen¹  Linqi Li¹  Lin Wang¹  Yu Han¹ 

[1] Ministry of Education Key Lab for Liquid-Solid Structure Evolution and Materials Processing, Institute of Materials Joining, Shandong University, Jinan 250061, China;

关键词: gas tungsten arc welding;    external magnetic field;    arc behavior;    metal vapor;    numerical analysis;   

DOI  :  10.3390/met10091199

来源: DOAJ

【 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.

【 授权许可】

Unknown