Studie způsobilosti výrobního zařízení v procesu mokrého pískování

Abstract

The master’s thesis deals with the evaluation of the feasibility of manufacturing equipment for wet sandblasting of replaceable cutting inserts (VBD) with a coating applied by chemical vapor deposition (CVD). In this context, capability is understood as the ability of the equipment to ensure consistent properties of cutting tools, which is achieved by the uniform introduction of compressive residual stresses into the surface layers of all VBDs within a single production batch. The aim of the thesis is to analyze how one of the key process parameters of wet sandblasting, specifically the feed step size of the fixture, influences the distribution of these stresses.The theoretical part focuses on the principles of CVD coating, the issue of residual stresses, their measurement, and post-deposition surface treatments, with emphasis on wet sandblasting. The practical part includes the design and implementation of the experiment, residual stress measurement using X-ray diffraction, and statistical analysis of the results. Furthermore, the influence of the given parameter on the adhesion of the coating to the substrate and on the visual properties of a specific type of VBD is evaluated. The results of the thesis serve as a basis for optimizing the wet sandblasting process in the production practice of Dormer Pramet s.r.o.