Abstract
The quality of cutting of low-carbon and stainless steel by beams of fiber and CO2 lasers with oxygen or nitrogen being used as a process gas is compared. The cut surface roughness for sheets from 3 to 10 mm thick is determined. Domains of optimal (in terms of the minimum roughness criterion) application of lasers of various types in the space of dimensionless parameters (Peclet number and dimensionless power) are found. It is demonstrated that the CO2 laser is more effective for laser-oxygen cutting, while the fiber laser is more beneficial for cutting with the use of a neutral gas.
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Original Russian Text © V.M. Fomin, A.A. Golyshev, A.G. Malikov, A.M. Orishich, V. B. Shulyat’ev.
Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 56, No. 4, pp. 215–225, July–August, 2015.
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Fomin, V.M., Golyshev, A.A., Malikov, A.G. et al. Mechanical characteristics of high-quality laser cutting of steel by fiber and CO2 lasers. J Appl Mech Tech Phy 56, 726–735 (2015). https://doi.org/10.1134/S0021894415040203
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DOI: https://doi.org/10.1134/S0021894415040203