The article presents the results of pilot abrasive tests of diamond segments, made on various metallic binders in powder metallurgy technology, intended for grinding granite surfaces. The article presents the results of testing the hardness of abrasive segments based on the Brinell method. The impact of hardness of segments on their ability to maintain diamond grain in the binder was noticed, which translated into the wear of abrasive segments during their work. The tribological tests of their wear during operation (research cycles), determined by the loss of mass of abrasive segments in the process of grinding the granite surface of Strzegom type, with given kinematic parameters and constant pressure were carried out. Research on the wear of diamond segments was carried out on the author's own research stand. A special test stand has been designed and made, which makes it possible to attach segments in a non-destructive manner. The tribological tests were carried out taking into account the factors of surface parallelism of the diamond segments to the work surface (granite slab) and at the axial pressure (perpendicular) to the surface being worked. A detailed description of the test stand is discussed in the paper. The article presents the results of microscopic observations of the examined segments after selected research cycles, using the optical microscope in the inverted system of the Nikon Eclipse MA200. The cognitive goal of the research was to broaden current knowledge on the properties of abrasive segments during their work and to examine the changing surface of the diamond segment matrix in the cyclic work process.Keywords: Diamond abrasive segments, hardness tests, tribological tests, abrasive wear
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