Keyhole formation and collapse in plasma arc welding

Citation
Hg. Fan et R. Kovacevic, Keyhole formation and collapse in plasma arc welding, J PHYS D, 32(22), 1999, pp. 2902-2909
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN journal
00223727 → ACNP
Volume
32
Issue
22
Year of publication
1999
Pages
2902 - 2909
Database
ISI
SICI code
0022-3727(19991121)32:22<2902:KFACIP>2.0.ZU;2-9
Abstract
A mathematical model is developed to describe the heat transfer and fluid h ow in stationary keyhole plasma are welding. Using the volume of fluid meth od, the processes of heating, melting, collapsing and subsequent solidifyin g in the molten pool are dynamically studied. The predicted results have be en compared with the experimental weld and keyhole shape. Using the LaserSt robe video system, the captured images of the upper surface of the weld poo l are used to verify the predicted transient development of the weld pool. It is indicated that theoretical predictions and the experimental results a re in close agreement.