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Proceedings Paper

Thermal coupling inside the keyhole during welding process
Author(s): Anne Poueyo-Verwaerde; B. Dabezies; Remy Fabbro
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Paper Abstract

We present a global analysis of the welding process (plasma, keyhole, thermal coupling...). Experimental energy balances of the process are presented and interpreted for different welding conditions. Then a modelization of the keyhole and of the power deposition inside it allows us to quantify the absorption process inside the keyhole (plasma absorption by Inverse Bremsstrahlung effect and Fresnel absorption). The explanations of our experimental results can then be confirmed. The influence of the welding speed on the keyhole geometry is pointed out, and the consequences on the absorption process are explained.

Paper Details

Date Published: 7 September 1994
PDF: 10 pages
Proc. SPIE 2207, Laser Materials Processing: Industrial and Microelectronics Applications, (7 September 1994); doi: 10.1117/12.184720
Show Author Affiliations
Anne Poueyo-Verwaerde, Unite mixte ETCA/CNRS (France)
B. Dabezies, Alcatel Alsthom Recherche (France)
Remy Fabbro, Unite mixte ETCA/CNRS (France)


Published in SPIE Proceedings Vol. 2207:
Laser Materials Processing: Industrial and Microelectronics Applications

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