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Proceedings Paper

Welding Of Steel With A CO[sub]2[/sub]-Laser Of 20 Kw
Author(s): M. Funk; U. Kohler; K. Behler; E. Beyer
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Paper Abstract

Laser welding experiments of thick metal sheets with a thickness of up to 20 mm at high power levels up to 20 kW beam power are reported. Due to the high intensity of the laser beam exceeding 107 Wcm-2, the effect of plasma suppression by helium gas shielding was investigated. Furthermore, the welding parameters were determined for a laser beam power range between 10 and 20 kW. The first results indicate that an extrapolation of the laser welding parameters which already had been observed when welding at lower power levels < 10 kW, is not applicable for the 20 kW range. Moreover, the influence of the welding speed on the porosity of the welding seam in low carbon steels of 20 mm sample thickness was slightly different from results of thin sheet welding with a thickness of less than 10 mm.

Paper Details

Date Published: 26 October 1989
PDF: 7 pages
Proc. SPIE 1132, High Power Lasers and Laser Machining Technology, (26 October 1989);
Show Author Affiliations
M. Funk, Fraunhofer-Institut fur Lasertechnik (Germany)
U. Kohler, Fraunhofer-Institut fur Lasertechnik (Germany)
K. Behler, Fraunhofer-Institut fur Lasertechnik (Germany)
E. Beyer, Fraunhofer-Institut fur Lasertechnik (Germany)

Published in SPIE Proceedings Vol. 1132:
High Power Lasers and Laser Machining Technology
Michel Gaillard; A. Quenzer, Editor(s)

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