Influence of the shielding gas internal bore welding

Isabelle Vastra; Cecile Boudot

doi:10.1117/12.46895

1 October 1991 Influence of the shielding gas internal bore welding

Isabelle Vastra, Cecile Boudot

Proceedings Volume 1502, Industrial and Scientific Uses of High-Power Lasers; (1991) https://doi.org/10.1117/12.46895
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

Abstract

As the authors welded with a small focus distance in a small area, the shielding gas performed the following new functions: heat removal, optics shielding, and liquid metal shielding. Therefore, the gas usually used in laser welding (He, N2, Ar, or a mixture) was compared, with and without a small percentage of oxygen. The benefit influence of a small percentage of oxygen has been demonstrated for the three aimed points, but also an important and beneficial effect on the weldshape has been show; i.e., with the same welding speed value and the same welding energy value the weld penetration can be increased from 0.5 mm up to 2 mm (only by optimization of the gas composition with a small amount of oxygen).

Citation Download Citation

Isabelle Vastra and Cecile Boudot "Influence of the shielding gas internal bore welding", Proc. SPIE 1502, Industrial and Scientific Uses of High-Power Lasers, (1 October 1991); https://doi.org/10.1117/12.46895

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