Actual Problems in Machine Building 2019 Vol. 6 No. 1-4

Actual Problems in Machine Building. Vol. 6. N 1-4. 2019 Materials Science in Machine Building ____________________________________________________________________ 192 производстве : материалы 1 междунар. науч.-практ. конф., Чебоксары, 22–24 окт. 2015 г. – Чебоксары : Чуваш. гос. ун-т, 2015. – С. 153–160 . 11. Владимирова Ю. О. Разработка жаропрочных и износостойких наноструктурных материалов на основе порошковой меди для поршней литейного оборудования / Ю. О. Владимирова, Е. П. Шалунов, И. Е. Илларионов // Инновационные машиностроительные технологии, оборудование и материалы-2018 (МНТК «ИМТОМ-2018») : материалы 9 междунар. науч.-техн. конф., Казань, 5–7 дек. 2018 г. – Казань : КНИАТ, 2018. – С. 23–27. 12. Shalunov E. P. Heat resistant and heat-and wear-resistant dispersion strenghenedcomposit materials on powder copper base of Discom trade mark for valve guides and valve seats for diesel and petrol engines / E. P. Shalunov, S. A. Orlov, V. S. Slavoljubov // Science for Materials in the Frontier of Centuries. Advantages and Challenges : proc. of Int. Conf. (Kyiv, Ukraine). – Vol. 2. – Kyiv : Frantsevich IPMS, 2002. – P. 599–600. 13. Дроздов Ю. Н. Противозадирная стойкость трущихся тел / Ю. Н. Дроздов, В. Г. Арчегов, В. Л. Смирнов. – Москва : Наука, 1981. – 127 с. 14. Порохов В. С. Трибологические методы испытаний масел и присадок / В. С. Порохов. – Москва : Машиностроение, 1983. – 183 с. 15. Буше Н. А. Совместимость трущихся поверхностей / Н. А. Буше, В. В. Копытько. – Москва : Наука, 1981. – 127 с. TRIBOLOGICAL TESTS OF NANOSTRUCTURED MATERIAL BASED ON POWDER COPPER AND EVALUATION THE POSSIBILITY OF ITS USE IN THE VALVE GUIDE OF HIGH-FORCED ENGINES Vladimirova Yu. O. , Assistant, e-mail: yulivladimirova@mail.ru Shalunov E.P. , D.Sc. (Engineering), Professor, e-mail: shalunov2003@mail.ru Smirnov V.M ., D.Sc. (Physic and mathematic), Associate Professor, e-mail: vms53@inbox.ru I. N. Ulianov Chuvash State University, 15 Moskovsky Prospekt, Cheboksary, 428015, Russian Federation Abstract The technique and results of comparative tribotechnical tests of the newly developed nanostructured material based on cu-Al-C-O Powder copper system containing 0.9 % by weight are presented. aluminum and 0.3 %by weight. carbon, which showed that this material in its tribotechnical characteristics significantly exceeds both the standard bronze F65 DIN 17666 (domestic analogue – bronze brand Brkn2s), as previously developed nanostructured materials based on copper powder system Cu-Al-Ti-C-O grades 3/01 and 3/03. In particular, the coefficient of resistance of the new material is 2.5 times higher than that of the standard bronze, and the coefficient of its wear resistance exceeds the same parameter for the standard bronze by 17 times. At the same time, in the case of using a new material, the wear resistance coefficient of the coupling of the guide sleeve with the valve will increase by 21 times compared to the coupling containing the guide sleeve made of standard bronze F65. Keywords Valve guides, nanostructured material, dispersion hardening, wear resistance, resistance to scoring, «pad - roller»