Theoretical studies of adhesion of polymer compound protector on the surface of abrasive grain for waterjet cutting in an aqueous environment

Waterjet cutting technology is used to perform underwater technical work under water to solve special problems. However, wear of the jet-forming nozzle reduces the cutting efficiency and requires replacement in severe conditions. To date, many studies have been conducted on the wear of the waterjet nozzle and methods for extending its service life have been proposed. The authors of the article propose using abrasive grains coated with a polymer protective film (compound protector) in waterjet cutting, which will contribute to a significant increase in the service life of the parts of the waterjet cutting unit. However, there is a significant drawback to using such protective films — being in an aquatic environment for a long time, the protective shell of the abrasive grain swells due to water diffusing into it. Therefore, this article is devoted to the study of the adhesion of a polymer compound protector on the surface of an abrasive grain for waterjet cutting in an aqueous medium using the theory of non-local interparticle interactions in a continuous medium, which made it possible to assess the possibility of coating destruction during the introduction into the liquid flow and to fully realize the potential for using mobile waterjet installations in underwater conditions.
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