An analysis of volumetric radiation heat flux and experimental comparison with are light sensing in GTA welding process

Authors
Citation
Jh. Lee et Sj. Na, An analysis of volumetric radiation heat flux and experimental comparison with are light sensing in GTA welding process, J MATER PR, 110(1), 2001, pp. 104-110
Citations number
14
Categorie Soggetti
Material Science & Engineering
Journal title
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
ISSN journal
09240136 → ACNP
Volume
110
Issue
1
Year of publication
2001
Pages
104 - 110
Database
ISI
SICI code
0924-0136(20010301)110:1<104:AAOVRH>2.0.ZU;2-R
Abstract
The volumetric radiation heat flux was analyzed from a model of the entire free burning are of GTA welding and its results were compared with measurem ents of the are fight intensity to find a relationship between them. Experi ments were carried out for various welding currents using electrodes of dif ferent vertex angles. The results showed similar behavior for both the volu metric radiation heat flux and the light intensity of GTA welding are. Both presented a linear relationship with the logarithmic value of the are leng th. Consequently the are light intensity could be assumed to have a linear relationship to its radiation heat in the range of normal are length. (C) 2 001 Elsevier Science B.V. All rights reserved.