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Information × Registration Number 0225U001873, (0122U000401) , R & D reports Title Development of methods for improving the physico-mechanical and physico-chemical properties of diamond grinding powders for abrasive purposes influence on bulk grain defects by gravitational, magnetic, electric fields and chemical and thermochemical treatment Оставить отзыв popup.stage_title Розробка методів покращення фізико-механічних та фізико-хімічних властивостей шліфпорошків алмазу абразивного призначення спрямованим впливом на об'ємні дефекти зерен дією гравітаційних, магнітних, електричних полів та хімічної і термохімічної обробок Head Lavrinenko Valerii I., Доктор технічних наукPrikhna Tetiana O., Доктор технічних наук Registration Date 10-02-2025 Organization V. Bakul Institute of superhard material of the National Academy of Sciences of Ukraine popup.description1 Study of changes in physical and mechanical and physicochemical properties of grinding powders of synthetic diamond brands AC6, AC20, AC32 grain size 160 / 125‑80 / 63 initial and after exposure to their volumetric defects of force fields and chemical treatments to improve the performance characteristics of diamonds abrasives. popup.description2  Technological methods to obtaining diamond grinding powders of elite grades (from AC6 to AC50) with the grain size of 160/125 - 80/63 having high heat resistance, uniformity in strength and grain size have been developed. Powders which extreme fractions differ from each other by a factor of surface activity by approximately 2 times, were obtained by distributing AC20 diamonds of 160/125 grain size in a weakly alkaline aqueous solution according to surface defects. This ensures the separation of AC50 and AC32 diamond powders (51.5%) from the initial mixture (besides, 10.5% of AC50 have a uniformity in strength 2 times higher than in the initial powders). Preparation of initial AC20 diamond powders of 100/80 grain size for flotation (by surface activation with iron ions from Mohr salt solution in an ultrasonic field) allows to isolate special diamonds. They have: 5% increased strength under static compression, 2 times higher uniformity in strength, 2 orders of magnitude lower specific magnetic susceptibility, 3 orders of magnitude higher specific electrical resistivity, 2.2 times lower mass fraction of impurities, and 1.5 times lower hydrophilicity. Grinding tools equipped with the developed grinding powders have 2 to 6 times greater wear resistance compared to the tools made from standard powders. TI 2500.00862 "Production of elite synthetic diamond grinding powders of special purpose for grinding tools" and TI 25000.00861 "Production of diamond synthetic grinding powders of increased uniformity in strength using powder preparation for flotation in an ultrasonic field" have been written. Product Description popup.authors Ivakhnenko Serhii O. Ilnytska Halyna D. Anisin Oleksandr M. Bilorusets Viktor V. Bazalii Halyna A. Bondar Ivan V. Vynohradov Serhii O. Hryhorova Larysa S. Dubko Valentyna P. Zabolotnyi Serhii D. Zaitseva Iryna M. Kovalov Serhii V. Kosenchuk Tamara O. Kotynska Liudmyla Y. Krotenko Tetiana L. Lysovenko Serhii O. Lohinova Olha B. Liudvichenko Oleksii P. Niemets Viktor M. Nekoval Mykola M. Oliynik Nonna O. Pasichnyi Oleh O. Pashchenko Yevhen O. Petasiuk Hryhorii A. Psiarnetska Tetiana O. Sytnyk Borys V. Skriabin Viktor V. Skriabin Valerii O. Smokvyna Volodymyr V. Staryk Serhii P. Tymoshenko Viktoriia V. Tymoshenko Liudmyla M. Tkach Vasyl M. Ushchapovskyi Yurii P. Khrypkova Liudmyla D. Sheiko Maksym М. Shсhur Nataliia A. popup.nrat_date 2025-02-10 Close