Перегляд за Автор "Ryzhkov, Yu. V."

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Improving wear resistance of responsible hydraulic hammer details with ion-plasma treatment
(Харківський національний автомобільно-дорожній університет, 2020) Glushkova, D. B.; Ryzhkov, Yu. V.; Kostina, L. L.; Chigrin, A. A.; Stepanyuk, A. I.; Глушкова, Д. Б.; Рижков, Ю. В.; Костіна, Л. Л.; Чигрин, А. О.; Степанюк, А. І.; Глушкова, Д. Б.; Рыжков, Ю. В.; Костина, Л. Л.; Чигрин, А. А.; Степанюк, А. И.
Details of the hammer during operation are subject to wear, which leads to a decrease in their service life. In accordance with the literature data in the practice of engineering uses many methods of hardening, which do not give a significant effect. Therefore, the application of new methods of surface hardening has become topical. These methods include ion-plasma chromium plating. On the basis of experimental studies, the effect of ion-plasma chromium plating on the wear resistance and mechanical properties of hydraulic hammer parts has been established, structural changes in the material have been analyzed. Ion-plasma chromizing of the parts pro-motes the increase of their wear resistance in 1.75 times as compared to those which are not strengthened. The technology of ion-plasma chromizing secures the running of the strengthened parts without breaking off and chipping. The zones of structural changes are marked on the sec-tions of parts damages, which are typical for the effects of the second hardening.
The corrosion resistance of heat-resistant alloys for parts of power equipment
(Харківський національний автомобільно-дорожній університет, 2022) Vahrusheva, V. S.; Hlushkova, D. B.; Volchuk, V. M.; Nosova, T. V.; Mamhur, S. I.; Tsokur, N. I.; Bagrov, V. A.; Demchenko, S. V.; Ryzhkov, Yu. V.; Scrypnikov, V. O.; Вахрушева, В. С.; Глушкова, Д. Б.; Волчук, В. М.; Носова, T. В.; Мамчур, С. І.; Цокур, Н. І.; Багров, В. А.; Демченко, С. В.; Рижков, Ю. В.; Скрипніков, В. О.
For the manufacture of parts and assemblies of the turbopump unit of details of power equipment, welded joints with corrosion resistant steels and heat-resistant alloys are used, requiring various modes heat treatment to achieve the required level of mechanical properties. In the manufacture of parts and assemblies of details of power equipment at the machine-building enterprises of Ukraine, it became necessary to replace semi-finished products. It is necessary to replace sheet products from high-alloy alloys ХН67МВТЮ and 06Х15Н6МВФБ with one alloy with a high complex of physical and mechanical characteristics. In the work, as a replacement for the applied heat-resistant alloys, Inconel 718 alloy welded to 316L steel. Samples of welded joints, processed according to the recommended mode, showed increased corrosion resistance.