Influence of different configurations of assisting gas in high-power cw-CO2-laser welding

Jiangtao Luo; Zhaogu Cheng; Hongliang Qiang; Gang Chen; Runwen Wang

doi:10.1117/12.253134

30 September 1996 Influence of different configurations of assisting gas in high-power cw-CO₂-laser welding

Jiangtao Luo, Zhaogu Cheng, Hongliang Qiang, Gang Chen, Runwen Wang

Proceedings Volume 2888, Laser Processing of Materials and Industrial Applications; (1996) https://doi.org/10.1117/12.253134
Event: Photonics China '96, 1996, Beijing, China

Abstract

In high power cw-CO₂-laser welding, assisting gas is necessary. It has a great effect on the welding results, such as penetration depth, cross section, size of the heat affected zone and welds surface. Much has been done on discussing the influence of its kind and flow rate on the welding results, but little attention was given to its configurations. In this article, several configurations of assisting gas were tried and the according welding results were given. Especially, a new gas assisting configuration including three gases was suggested. Their influences on the topography and cross sections were qualitatively analyzed. Experimental results showed that the best welds were obtained with the new three-gas-configuration.

Citation Download Citation

Jiangtao Luo, Zhaogu Cheng, Hongliang Qiang, Gang Chen, and Runwen Wang "Influence of different configurations of assisting gas in high-power cw-CO₂-laser welding", Proc. SPIE 2888, Laser Processing of Materials and Industrial Applications, (30 September 1996); https://doi.org/10.1117/12.253134

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