Authors: F.I. Panteleenko, V.A. Okovity, O.G. Devoino, Sidorov , A.A. Litvinko, V.V. Okovity, Astashinsky

Title of the article: Optimization of technological parameters of processing multilayer plasma coatings with a continuous laser

Year: 2023, Issue: 1, Pages: 24-33

Branch of knowledge: 2.5.5. Technology and equipment for mechanical and physical-technical processing

Index UDK: 621.793.7:621.762

DOI: 10.26730/1999-4125-2023-1-24-33

Abstract: The article presents the results of optimization of technological parameters of processing by a continuous laser beam of plasma coatings based on NiCrAlY - ZrO2-Y2O3-Al2O3 and (NiCrAlY)B powders. Highly concentrated modification of coatings using a laser leads to a significant hardening and compaction of the outer layer, while reducing the roughness and hence the uneven heating of the coating, and also eliminates the overall porosity in the near-surface layer. With laser melting, by changing the parameters of the radiation modes and optimizing them, it is possible to create the necessary structure in the coating being formed with the creation of a dense coating with a melted and smooth surface, with high-quality adhesive strength for the operation of machined parts, with obtaining a fairly dispersed microstructure and minimal diffusion of elements from the substrate. High-energy energy sources in the subsequent processing of the formed wear-resistant plasma coatings have their own advantages and features: the ability to control the parameters that provide regulation of the structure of near-surface layers and their technological characteristics (geometrical dimensions of the treated areas, their roughness, hardness, wear resistance, etc.), the use of the locality and concentration of the energy supplied to the coating being processed and make it possible to process only the near-surface layer of the coating without unnecessary heating of the entire volume with a violation of its properties and structure.

Key words: optimization of technological parameters cw laser plasma coatings maximum degree of local melting beam travel speed track overlap ratio thermal destruction of the surface

Receiving date: 30.12.2022

Approval date: 15.02.2023

Publication date: 30.03.2023

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