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12 September 2002 Theoretical and experimental study on keyhole effects in laser deep- penetration welding
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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
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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