Investigation of the efficiency process during CO2 laser welding of low-alloyed steels

Peter Petrov; Tzveta Apostolova

doi:10.1117/12.816659

21 April 2009 Investigation of the efficiency process during CO₂ laser welding of low-alloyed steels

Peter Petrov, Tzveta Apostolova

Proceedings Volume 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 713125 (2009) https://doi.org/10.1117/12.816659
Event: XVII International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2008, Lisboa, Portugal

Abstract

This paper reports results from the theoretical and experimental study of the energy transfer during CO₂ laser beam welding of 10 mm low-alloyed steels square butt joints. The laser beam power and the welding speed are varied systematically from 9 kW to 32 kW and from 1 m/min to 5 m/min, respectively. The observed weld depth penetration is up to 10 mm and the width of weld seams is between 0.8 and 1.25 mm. The joining efficiency during the laser welding was in the range of 11.8 to 32 mm²/kJ. Melting efficiency is determined from the measured welding seams cross section for a specified laser power and travel speed. Theoretically, predicted values of melting efficiency are calculated using Rosenthal's and Rycalin moving heat sources equation in 2D (line source).

Citation Download Citation

Peter Petrov and Tzveta Apostolova "Investigation of the efficiency process during CO₂ laser welding of low-alloyed steels", Proc. SPIE 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 713125 (21 April 2009); https://doi.org/10.1117/12.816659

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