Title: Method of cutting stainless steel by using fiber laser
Application Number: 200610146880 Application Date: 2006.11.27
Publication Number: 1972040 Publication Date: 2007.05.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01S3/067;H01S3/16;H01S3/10;B23K26/00;B23K26/14
Applicant(s) Name: Air Liquide Address:
Inventor(s) Name: Chouf Karim;Maazaoui Hakim;Briand Francis
Attorney & Agent: yangxiao guang lizheng
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 mum, 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.
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