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Proceedings Paper

Theoretical and experimental study on keyhole effects in laser deep- penetration welding
Author(s): Lijun Li; Xiangzhong Jin; Yi Zhang
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Paper 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

Paper Details

Date Published: 12 September 2002
PDF: 10 pages
Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); doi: 10.1117/12.482870
Show Author Affiliations
Lijun Li, Hunan Univ. (China)
Xiangzhong Jin, Hunan Univ. (China)
Yi Zhang, Hunan Univ. (China)

Published in SPIE Proceedings Vol. 4915:
Lasers in Material Processing and Manufacturing
ShuShen Deng; Tatsuo Okada; Klaus Behler; XingZong Wang, Editor(s)

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