Theoretical and experimental study on keyhole effects in laser deep- penetration welding

Lijun Li; Xiangzhong Jin; Yi Zhang

doi:10.1117/12.482870

12 September 2002 Theoretical and experimental study on keyhole effects in laser deep- penetration welding

Lijun Li, Xiangzhong Jin, Yi Zhang

Proceedings Volume 4915, Lasers in Material Processing and Manufacturing; (2002) https://doi.org/10.1117/12.482870
Event: Photonics Asia, 2002, Shanghai, China

Abstract

A technique of laser welding glass GG17 (Pyrex) was developed to get clear photographs of the keyhole for quantitative study. The geometrical characteristics of the keyholes are experimentally examined. Based on the known keyhole geometry, the Fresnel absorption and the conduction and convection heat flux loss of the keyhole wall were calculated and compared. A concept of self-regulation of the front keyhole wall for getting energy balance is proposed. The major force that balances the surface tension is also discussed

Citation Download Citation

Lijun Li, Xiangzhong Jin, and Yi Zhang "Theoretical and experimental study on keyhole effects in laser deep- penetration welding", Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); https://doi.org/10.1117/12.482870

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