Modelling of transport phenomena in 3D GMAW of thick metals with V groove

被引：30

作者：

Hu, J. ^{[1
]}

Tsai, H. L. ^{[2
]}

机构：

[1] Univ Bridgeport, Dept Mech Engn, Bridgeport, CT 06604 USA

[2] Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2008年 / 41卷 / 06期

关键词：

D O I：

10.1088/0022-3727/41/6/065202

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This paper analyses the dynamic process of groove filling and the resulting weld pool fluid flow in gas metal arc welding of thick metals with V groove. Filler droplets carrying mass, momentum, thermal energy and sulfur species are periodically impinged onto the workpiece. The complex transport phenomena in the weld pool, caused by the combined effect of droplet impingement, gravity, electromagnetic force, surface tension and plasma arc pressure, were investigated to determine the transient weld pool shape and distributions of velocity, temperature and sulfur species in the weld pool. It was found that the groove provides a channel which can smooth the flow in the weld pool, leading to poor mixing between the filler metal and the base metal.

引用

页数：10

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