This article is cited in 19 papers

Energy balance in high-quality cutting of steel by fiber and СО$_2$ lasers

V. M. Fomin, A. A. Golyshev, A. M. Orishich, V. B. Shulyat'ev

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: The energy balance of laser cutting of low-carbon and stainless steel sheets with the minimum roughness of the cut surface is experimentally studied. Experimental data obtained in wide ranges of cutting parameters are generalized with the use of dimensionless parameters (Peclet number and absorbed laser energy). It is discovered for the first time that the minimum roughness is ensured at a certain value of energy per unit volume of the melt (approximately 26 J/mm$^3$), regardless of the gas type (oxygen or nitrogen) and laser type (fiber laser with a wavelength of 1.07 $\mu$m or СО$_2$ laser with a wavelength of 10.6 $\mu$m).

Keywords: laser cutting, СО$_2$ laser, fiber laser, dimensionless parameters, energy balance.

UDC: 621.373.826

Received: 28.03.2016

DOI: 10.15372/PMTF20170223

 English version: Journal of Applied Mechanics and Technical Physics, 2017, 58:2, 371–378

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