CHARACTERIZATION OF ACCOMPANYING RADIATION UNDER LASER PROCESSING OF STAINLESS STEEL 12CR18NI10TI

Research results of accompanying radiation produced by laser processing of material handling are presented, and energy characteristics in various wavelength ranges are determined. This issue is relevant both in the technological sphere and in the fields of medicine and labor protection. The theoretical and experimental determination of the accompanying radiation spectra will make it possible to assess the presence of specific wavelengths that can destabilize laser processing, in particular, stainless steel 12Cr18Ni10Ti, as one of the most in demand in industrial applications. The dependence of accompanying radiation spectrum on the chemical composition of the handled material was assessed using specialized software. By theory, it was found that the emission spectra of 12Cr18Ni10Ti stainless steel are in the UV, violet and green wavelength ranges. In the experimental work, an automated monochromator spectrograph model M266 (Solar laser systems) was used to determine the spectral composition of the accompanying radiation. The obtained spectral analysis results confirm the theoretical data and give supplement information, which is due to the presence of intense thermal effects that software does not take into account. The research results indicate the presence of accompanying radiation in the processing of 12Cr18Ni10Ti stainless steel using the technology of laser marking of spectral lines in the UV wavelength range. A comparison of the values obtained in the theoretical and experimental parts of the study showed the need to combine these two methods of studying accompanying radiation, since it is the combination of theoretical and experimental data that allows levelling disadvantages of each method and obtain the most complete spectral picture of accompanying radiation. The recorded research results, in particular the presence of UV spectral lines, necessitate measurements of the energy characteristics of accompanying radiation in the UV range, not only when laser marking, but also under various laser processing, determining specific levels in order for potential hazard rating to personnel.

laser processing, accompanying radiation, ultraviolet radiation, structural high-alloy corrosion-resistant steel 12Cr18Ni10Ti, accompanying radiation spectra