The article is devoted to improving the method of testing the wear resistance of friction pairs in a wide range of hardness by embedding a roller into a flat surface of the material under study (sample), first proposed by M. V. Lomonosov. The formula for estimating the volumetric wear resistance from linear depending on the specific pressure is proved. According to the new method, the relative wear resistance of materials in a wide hardness range was evaluated.
The spread of 3d printing in the industry has led to the need to determine the accuracy of reproducible dimensions on a 3d printer. Precision manufacturing of parts is essential in the manufacture of products. The hardware manufacturer provides the user with information on the positioning accuracy of the 3d printer, but this could be a marketing statement. Also, it is very important to know the accuracy of a 3d printer after its upgrade or under the influence of various external factors (ambient temperature, vibrations) inherent in the location of the printer. The purpose of this work was to check the accuracy of a 3d printer and to develop a methodology for assessing the accuracy of a 3d printer by printing a sample product. As a result of the work done, it was found that by measuring various samples of products, it is possible to determine the quality of accuracy for certain structural elements and the average coefficient of accuracy of products. It was also found that the study of a sample product allows us to determine most of the factors affecting the accuracy of manufacturing products.
Работа выполнена при поддержке гранта Российского научного фонда по приоритетному направлению деятельности Российского научного фонда «Проведение фундаментальных научных исследований и поисковых научных исследований отдельными научными группами» научного проекта: Применение цифрового моделирования и больших данных для повышения эффективности механической обработки титановых лопаток паровых турбин и их эксплуатации в условиях каплеударной эрозии № 22-19-00178.
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