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The article considers the influence of the radiation power  W , the longitudinal feed  Spr  of the laser beam and the distance  L  from the protective glass of the laser focusing head to the workpiece on the  PG-CP 4 powder coating absolute wear which was applied to  HVG  steel by plasma and subjected to laser treatment. A multi-factor model is established that relates the absolute wear of  PG-CP 4 coating to the input process factors and allows you to assign a laser treatment mode to provide the minimum wear of the processed surface layer. The greatest influence on coating absolute wear is provided by the longitudinal feed of laser beam, with which the wear increases. Compared to  Spr , the influence of factor  W  on the coating absolute wear is 24% less, and the factor  L  influence is 4.4 times less. The minimum absolute wear of the coating occurs at  W  = 5  kW , Spr = 40 mm/s,  L  = 85 mm. The results of the research are recommended for use in enterprises that implement the processes of plasma and laser processing of materials, as well as in design organizations that develop modern technological laser systems.

Wear of the PG-CP4 powder coating applied to HVG steel and subjected to laser treatment