Experimental Evaluation of the Methods of Laser Cementation of Low-Alloy Tool Steels

Marinin, Evgeny A.; Chirkov, A. M.; Gavrilov, G. N.; Fetisov, G. P.; Chernyshov, D. A.; Kurganova, Yu. A.

doi:10.1134/s0036029518130153

Cited by 5 publications

(2 citation statements)

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“…Главными преимуществами данного метода являются: возмож-Л ность воздействовать на объект локально (размеры лазерного пятна варьируются от 10 -1 до 10 мм), возможность подвергать термообработке труднодоступные места на деталях. Слои полученного покрытия получают высокие механические характеристики, при этом модифицированный слой может составлять от нескольких микрометров до 1…3 мм [5]. Основными недостатками являются внутренние напряжения, образующиеся в поверхностном слое обработанного материала.…”

Section: лазерные технологии нанесения функциональных покрытийunclassified

The current state of laser technologies in the field of functional coatings

Palabugin,

Kalyuzhny

2023

Vestnik IzhGTU imeni M.T. Kalashnikova

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Two main directions in the field of laser radiation application for functional coatings are considered - the application of coatings using purely laser study and the combination of laser and other technologies. The most popular technological lasers used in both directions are identified: gas molecular lasers, diode, fiber, and solid-state lasers. Methods of hardening heat treatment of parts using a laser beam both with and without melting of the material are considered. A method of introducing alloying components of metallic and non-metallic nature into the substrate material using laser technologies is presented. The methods of laser surfacing are given, where the surfacing material is fed into the zone of exposure to laser radiation both in the form of a powder mixture and in the form of a filler wire. Powder mixture is most commonly used as surfacing material, wire is less often used. Technologies of laser-assisted evaporation used in the creation of three-dimensional objects are considered. Hybrid technologies of coating deposition are presented - laser surfacing using a plasma arc and high-frequency heating. It was found out that two types of plasmatrons are used in laser-plasma surfacing - direct and indirect types of action. In addition to hybrid laser surfacing, the method of hybrid laser-assisted evaporation is considered - plasma sputtering, or LAAPS, accompanied by laser heating and allowing to obtain coatings with increased adhesion strength to the substrate surface. The main advantages (the ability to adjust the thickness of the deposited coating layers, reduction of the thermal impact zone) and disadvantages (occurrence of cold microcracks on the surface, formation of pores in the coating) in the application of coatings using laser radiation are considered. The prospects for the development of laser and laser-plasma technologies in the field of functional coatings are analyzed on the example of practical application. The development of these technologies in future is largely due to the elimination of their shortcomings, increasing the efficiency of interaction between laser and plasma technologies.

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Section: лазерные технологии нанесения функциональных покрытийunclassified

The current state of laser technologies in the field of functional coatings

Palabugin,

Kalyuzhny

2023

Vestnik IzhGTU imeni M.T. Kalashnikova

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“…One of the alternative ways to obtain composite coatings is surfacing. Surfacing of composite coatings is used in manufacturing of new parts or in repair and restoration, thereby providing a high economic effect and increasing the service life of parts of a wide range [1,7]. Currently, laser surfacing is the most promising method for obtaining coatings from composite materials.…”

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confidence: 99%

Optimization of laser surfacing technological parameters to composite coatings WC/INC625

Zhavoronkova

Alekseev²,

Bazaleeva³

et al. 2023

E3S Web of Conf.

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Single laser tracks of the WC/INC625 composition in a wide range of concentrations of the carbide phase obtained by laser surfacing at various values of the technological parameters of the process are studied. Based on the results of quantitative metallographic analysis, promising compositions of coatings were selected and intervals of technological parameters were established. The modes allowing to obtain objects without cracks, with minimal porosity and a given geometry of the laser track cross-section were determined.

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Investigation of the contact fatigue strength of high quality carburised steel

Pakhomova

Fakhurtdinov

Zhavoronkova

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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The parameters of contact fatigue strength during vacuum carburization and ion nitriding of high quality steel (HQS) HQS-7 and HQS-10 are considered. Information about the modes of chemical and heat treatment is given and the technological process of hardening for HQS-7 and HQS-10 steels is considered. The characteristics of the contact fatigue strength of steels in the statistical aspect at different levels of contact stresses are obtained. A graphical analysis of the obtained values after testing was carried out, the optimal stresses for research were determined and the optimal version of chemical heat treatment was selected, which determines the best indicators for mechanical characteristics and operational requirements.

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Experimental Evaluation of the Methods of Laser Cementation of Low-Alloy Tool Steels

Cited by 5 publications

References 0 publications

The current state of laser technologies in the field of functional coatings

The current state of laser technologies in the field of functional coatings

Optimization of laser surfacing technological parameters to composite coatings WC/INC625

Investigation of the contact fatigue strength of high quality carburised steel

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