Actual Problems in Machine Building 2022 Vol. 9 No. 1-2

Актуальные проблемы в машиностроении. Том 9. № 1-2. 2022 Инновационные технологии в машиностроении ____________________________________________________________________ 37 симпозиума, Минск, 10–12 апреля 2013 г.: в 2 ч. – Минск: Беларуская навука, 2013. – Ч. 1. – С. 344–350. 12. Объемные наноструктурные материалы для контактов: разработка, производство, применение, реализация / Е.П. Шалунов, И.Е. Илларионов, А.Л. Матросов [и др.] // Современные технологии в машиностроении и литейном производстве: материалы I международной научной-практической конференции, Чебоксары, 22–24 октября 2015 г. – Чебоксары: Изд-во ЧГУ им. И.Н. Ульянова, 2015. – С. 351–365. 13. Шалунов Е.П., Смирнов В.М., Воронин А.В. Пути повышения надежности подшипников скольжения дизель-генераторных установок для аварийного энергоснабжения систем безопасности атомных электростанций // Вестник Чувашского университета. – 2017. – № 1. – С. 200–212. 14. Смирнов В.М., Тимофеев Д.А., Шалунов Е.П. Дисперcно-упрочненная связка на основе порошковой меди для алмазного инструмента // Современные технологии в машиностроении и литейном производстве: сборник материалов II международной научнопрактической конференции, 11–14 окт. 2016 г. – Чебоксары: Изд-во Чуваш. ун-та, 2016. – С. 317–320. 15. Influence of discharge energy on machining characteristics in EDM / M. Gostimirovic, P. Kovac, M. Sekulic, B. Skoric // Journal of Mechanical Science and Technology. – 2012. – Vol. 26. – P. 173–179. – DOI:10.1007/s12206-011-0922-x. STUDY OF WEAR RESISTANCE OF TOOL-ELECTRODES MADE OF DISPERSIONSTRENGTHENED COMPOSITE MATERIALS ON THE BASIS OF COPPER IN ELECTRICAL DISCHARGE MACHINING OF HIGH-SPEED STEELS Smirnov V.M., Ph.D. (Physics and Mathematics), Associate Professor, e-mail: vms53@inbox.ru Shalunov E.P., D.Sc. (Engineering), Professor, e-mail: shalunov2003@mail.ru Grigoriev A.S., Master’s Degree student I.N. Ulianov Chuvash State University, 15 Moskovsky Prospekt, Cheboksary, 428015, Russian Federation Abstract The research results of the wear resistance of tool-electrodes made of copper grade M1 and dispersion-strengthened composite materials based on copper, manufactured industrially on the basis of the method of reactionary mechanical alloying of copper powder in air with aluminum, carbon and oxygen are presented in this paper. Operational tests of electrode-tools made of the materials under study during electrical discharge piercing of plates made of high-speed steel R6M5F3 were carried out on a portable electrical discharge machine (extractor) ERP 01 at different pulse energies, which varied in steps from 0.024 J to 0.224 J. It is shown that the maximum volumetric wear and productivity of most of the investigated materials of electrode-tools during electrical discharge piercing of high-speed steel is observed at pulse energy of 0.126 J. It is established that the operational characteristics of electrode-tools made of studied composite materials are higher than those from copper grade M1. The influence of the electrical conductivity of dispersion-strengthened composite materials on the performance properties of electrode-tools made from it is analyzed. Keywords Electrical discharge machining, piercing, tool-electrode, pulse energy, dispersion-strengthened composite material, high-speed steel, relative volumetric wear, productivity.

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