Abstract: The invention relates to a laser cutting method for cutting a stainless steel workpiece using laser beam generation means comprising a silica fibre with an ytterbium-doped core to generate the laser beam. Preferably, the laser beam generated by the ytterbium-based fibre has a wavelength between 1.07 and 1.09 ?m, a quality factor of the laser beam is between 0.33 and 8 mm.mrad, and the laser beam has a power of between 0.1 and 25 kW. The assistance gas for the laser beam is chosen from nitrogen, helium, argon and mixtures thereof, and, optionally, it further contains one or more additional compounds chosen from O2, CO2, H2 and CH4.
Type:
Application
Filed:
June 2, 2011
Publication date:
February 2, 2012
Applicants:
La Soudure Autogene Francaise (Air Liquide Welding France), L'Air Liquide Societe Anonyme Pour I'Etude et I'Exploitation des Procedes Georges Claude
Inventors:
Francis BRlAND, Karim CHOUF, Hakim MAAZAOUI
Abstract: The invention relates to a laser cutting method for cutting a stainless steel workpiece using laser beam generation means comprising a silica fibre with an ytterbium-doped core to generate the laser beam. Preferably, the laser beam generated by the ytterbium-based fibre has a wavelength between 1.07 and 1.09 ?m, a quality factor of the laser beam is between 0.33 and 8 mm.mrad, and the laser beam has a power of between 0.1 and 25 kW. The assistance gas for the laser beam is chosen from nitrogen, helium, argon and mixtures thereof, and, optionally, it further contains one or more additional compounds chosen from O2, CO2, H2 and CH4.
Type:
Application
Filed:
November 15, 2006
Publication date:
May 31, 2007
Applicants:
L'Air Liquide Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude, La Soudure Autogene Francaise (Air Liquide Welding France)
Inventors:
Francis Briand, Karim Chouf, Hakim Maazaoui