Actual Problems in Machine Building 2018 Vol. 5 No. 3-4

Актуальные проблемы в машиностроении. Том 5. № 3-4. 2018 Инновационные технологии в машиностроении ____________________________________________________________________ 35 14. Барахтин Б.К., Немец А.М. Металлы и сплавы. Анализ и исследование. Физико- аналитические методы исследования металлов и сплавов. Неметаллические включения. – СПб.: Профессионал, 2006. – 490 с. – ISBN 5-98371-034-6. 15. Труфяков В.И . Прочность сварных соединений при переменных нагрузках. – Киев: Наукова думка, 1990. – 250 с. – ISBN 2-009392-2. INFLUENCE OF ENERGY PARAMETERS OF WELDING REGIMES ON DISTRIBUTION OF RESIDUAL STRESSES IN THE ZONE OF PERMANENT CONNECTION Saraev Y.N. 1 , D.Sc. (Engineering), Associate Professor, e-mail: litsin@ispms.tsc.ru Golikov N.I. 2 , Ph.D. (Engineering), Leading researcher, e-mail: n.i.golikov@mail.ru Sidorov M.M. 2 , Ph.D. (Engineering), Scientific associate, e-mail: sidorovmm@bk.ru Lunev A.G. 1 , Ph.D. (Engineering), Senior researcher, e-mail: agl@ispms.tsc.ru Perovskaya M.V. 1 , Ph.D. (Engineering), Scientific associate, e-mail: mv_perovskaya@inbox.ru 1 Institute of Strength Physics and Materials Science of the Siberian Branch of the RAS, 2/4, pr. Akademicheskii, Tomsk, 634055, Russian Federation 2 Larionov Institute of the Physical-Technical Problems of the North of Siberian Branch of the RAS, 1 Oktyabr'skaya st., Yakutsk, 677980, Russian Federation Abstract It is known that the residual stresses formed during welding affect the service properties of the structures. The magnitude and nature of residual welding stresses are directly dependent on the running energy of welding, which is determined by the welding regime. The influence of the energy parameters of the regimes during welding by modulated and direct current on the distribution of residual stresses in the zone of permanent connection. Investigation of residual stresses in the welding joints of 09G2S steel was carried out by the X-ray method. It is shown that the distribution of residual welding stresses essentially depends on the running energy of welding of the joints. Welding the facing seam with 4 mm diameter electrodes with a running energy of over 2000 kJ/m can lead to high tensile residual stresses. Keywords pulse-arc welding, running energy of welding, residual weld stress, X-ray method