An experimental study on the keyhole shapes in laser deep penetration welding |
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| Authors: | Xiangzhong Jin Lijun Li |
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| Affiliation: | Laser Institute of Hunan University, Changsha, Hunan Province 410082, People's Republic of China |
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| Abstract: | In this paper, the laser spot diameter and its intensity distribution are measured with a scanning pinhole, and the keyhole shapes are observed using a specially designed setup in laser deep penetration welding of glass GG17. Based on the above experimental results, the effects of the following factors on the keyhole shapes are studied: the laser spot diameter and its intensity distribution, defocus, welding speed and inverse Bremsstrahlung absorption of the plasma. |
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| Keywords: | Keyhole Laser deep penetration welding Fresnel absorption Inverse Bremsstrahlung absorption |
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