A dynamic model of drops detaching from a gas metal arc welding electrode

被引：87

作者：

Jones, LA

Eagar, TW

Lang, JH

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1998年 / 31卷 / 01期

关键词：

D O I：

10.1088/0022-3727/31/1/014

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A dynamic model of drop detachment in gas metal are welding is presented for low and moderate welding currents in an argon-rich plasma. Simulations performed with this model are compared with extensive experimental measurements of constant-current welding images and with limited experimental measurements of pulsed-current welding images. The comparisons indicate that the experimental axial magnetic forces are much less potent than the calculated axial magnetic forces when welding-current transients are not present. To explain this finding the hypothesis that internal flows are able to develop under the relatively quiescent conditions that exist during drop development in constant-current welding is advanced.

引用

页码：107 / 123

页数：17

共 20 条

[1]

ALLEMAND CD, 1985, WELD J, V64, P45

[2] LORENTZ FORCE IN MOLTEN TIP OF AN ARC ELECTRODE [J].