Paper Title:
Laser-Arc Hybrid Welding Process of Galvanized Steel Sheets
  Abstract

Galvanized steel sheets with a lap joint were welded by a laser-arc hybrid process. The hybrid system consisted of 2kW LD or YAG laser oscillator and frequency-modulated DC pulsed MAG welding machine. In this experiment, the arc traveled on the specimens, following the laser beam with the interval of 2 mm. The results showed that the hybrid process had some advantages, such as deep penetration depth, high welding speed and high gap-tolerance, in comparison with the conventional MAG welding. Observations from a high-speed digital video-camera suggested that the zinc and iron vapors induced by laser beam irradiation stabilized the arc plasma. Effects of the incidence angle between a welding head and a specimen on the weld bead formations were also discussed. As a result, the welding speed of 2.0 m/min was achieved at 1.0 mm of gap length condition when the incidence angle was 50 degree.

  Info
Periodical
Materials Science Forum (Volumes 580-582)
Edited by
Changhee Lee, Jong-Bong Lee, Dong-Hwan Park and Suck-Joo Na
Pages
355-358
DOI
10.4028/www.scientific.net/MSF.580-582.355
Citation
S. Matsusaka, T. Uezono, T. Tsumura, M. Tanaka, T. Watanabe, "Laser-Arc Hybrid Welding Process of Galvanized Steel Sheets", Materials Science Forum, Vols. 580-582, pp. 355-358, 2008
Online since
June 2008
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Price
$32.00
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