20 February 2014 Experimental comparison of the oxygen-assist laser cutting with a fiber and CO2-laser under the condition of minimal roughness
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Abstract
The conditions of minimal-roughness surface production were studied experimentally in the process of the oxygenassisted laser cutting with the fiber and СО2 lasers. The coefficient of the laser radiation absorption in the cut channel during the cutting process was measured as the sheet thickness varied from 3 to 16 mm. It is demonstrated that the cutting conditions with the minimal roughness can be formulated for the two laser types with the same generalized parameters, i.e. dimensionless absorbed laser power and Peclet number (dimensionless speed). Numerical values of these parameters were found experimentally. The optimum Peclet number is 0.5 for the СО2-laser cutting, and 0.35 when the fiber laser is used.
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A. M. Orishich, V. B. Shulyatyev, A. G. Malikov, A. A. Golyshev, "Experimental comparison of the oxygen-assist laser cutting with a fiber and CO2-laser under the condition of minimal roughness", Proc. SPIE 8963, High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications III, 89630Z (20 February 2014); doi: 10.1117/12.2037477; https://doi.org/10.1117/12.2037477
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