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15 November 2010 Sheet metal cutting with a 2 kW radially polarized CO2 laser
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Proceedings Volume 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 77511B (2010) https://doi.org/10.1117/12.880735
Event: 18th International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2010, Sofia, Bulgaria
Abstract
Laser processing of sheet metals are performed with a 2 kW cylindrically polarized CO2 laser. Drilling and cutting capabilities are compared between conventional circular polarization and radial/azimuthal polarization beams of the same power. A 9 mm-thick mild steel is drilled with O2 assist and azimuthal polarization shows a 15% faster drilling rate than circular polarization. A 4.5 mm-thick mild steel is cut with O2 assist and radial polarization shows a 50% faster cutting speed than circular polarization. Smaller surface roughness of the cut is obtained by the radial polarization. A 2 mm-thick stainless steel is cut with high-pressure N2 assist. Although no difference of the maximum cut speed between radial and circular polarizations are seen, it is possible to reduce the assist gas pressure from 0.6 MPa to 0.3 MPa in the case of radial polarization.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Masamori Endo "Sheet metal cutting with a 2 kW radially polarized CO2 laser", Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 77511B (15 November 2010); https://doi.org/10.1117/12.880735
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