Pulsed laser welding of cylindrical profile

Radim Ctvrtlik; Martina Havelkova

doi:10.1117/12.611079

23 March 2005 Pulsed laser welding of cylindrical profile

Radim Ctvrtlik, Martina Havelkova

Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611079
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic

Abstract

Laser welding is a very progressive branch of the laser material processing. The most common industrial welding lasers are CO₂ and Nd:YAG. Laser choice usually depends on economics, weld speed and penetration requirements, and the material. Some of the benefits of laser welding are its ability to perform precise narrow welds, good penetration, a small heat affected zone, low heat input and fast travelling times. The process also has the adavantages of minimum distortion, no secondary cleaning process or filler materials and a high degree of repeatability. The pulsed laser beam welding process is controlled by a variety of parameters. These include average power, peak power, pulse energy, pulse duration, traverse speeds, diameter, mode structure, polarization and focus position of laser beam, as well as material-dependent properties such as absorptivity and thermophysical properties. The present study focuses on the welding of cylindrical profile with Nd:YAG pulsed laser KLS 246-102 and on the effects of main processing parameters on weld quality for low carbon steel. Performed experiments of welding of the cylindrical profile are completed by simulation made by modeling program SYSWELD.

Citation Download Citation

Radim Ctvrtlik and Martina Havelkova "Pulsed laser welding of cylindrical profile", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); https://doi.org/10.1117/12.611079

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KEYWORDS

Laser welding

Laser processing

Nd:YAG lasers

Carbon

Pulsed laser operation

Distortion

Finite element methods

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