Sheet metal cutting with a 2 kW radially polarized CO2 laser

Masamori Endo

doi:10.1117/12.880735

15 November 2010 Sheet metal cutting with a 2 kW radially polarized CO₂ laser

Masamori Endo

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.

Citation Download Citation

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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