Spectroscopic investigation of laser-induced plasma in laser beam welding

J. Bruncko; Frantisek Uherek; Dusan Chorvat Jr.; Miroslav Michalka; P. Fodrek

doi:10.1117/12.464119

30 April 2002 Spectroscopic investigation of laser-induced plasma in laser beam welding

J. Bruncko, Frantisek Uherek, Dusan Chorvat Jr., Miroslav Michalka, P. Fodrek

Proceedings Volume 4644, Seventh International Conference on Laser and Laser-Information Technologies; (2002) https://doi.org/10.1117/12.464119
Event: Seventh International Conference on Laser and Laser Information Technologies, 2001, Vladimir, Suzdal, Russian Federation

Abstract

The contribution deals with the diagnostics of laser induced plasma (LIP) by optical emission spectroscopy. Laser induced plasma occurs during laser welding and reveals important information about technological process. The performed experiments were concerned with in-time spectral analysis (wavelength range: 200-800 nm) of laser induced plasma of austenitic steel (18% Cr, 9% Ni) during cw CO₂ laser welding. Circumstances of conversion from conducting mode to keyhole mode (and vice versa) were investigated. A comparison of the characteristics of the spectrum emission, penetration characteristics and input welding parameters was also studied.

Citation Download Citation

J. Bruncko, Frantisek Uherek, Dusan Chorvat Jr., Miroslav Michalka, and P. Fodrek "Spectroscopic investigation of laser-induced plasma in laser beam welding", Proc. SPIE 4644, Seventh International Conference on Laser and Laser-Information Technologies, (30 April 2002); https://doi.org/10.1117/12.464119

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