Thermal coupling inside the keyhole during welding process

Anne Poueyo-Verwaerde; B. Dabezies; Remy Fabbro

doi:10.1117/12.184720

7 September 1994 Thermal coupling inside the keyhole during welding process

Anne Poueyo-Verwaerde, B. Dabezies, Remy Fabbro

Proceedings Volume 2207, Laser Materials Processing: Industrial and Microelectronics Applications; (1994) https://doi.org/10.1117/12.184720
Event: Europto High Power Lasers and Laser Applications V, 1994, Vienna, Austria

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.

Citation Download Citation

Anne Poueyo-Verwaerde, B. Dabezies, and Remy Fabbro "Thermal coupling inside the keyhole during welding process", Proc. SPIE 2207, Laser Materials Processing: Industrial and Microelectronics Applications, (7 September 1994); https://doi.org/10.1117/12.184720

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