Obrabotka Metallov 2020 Vol. 22 No. 3

OBRABOTKAMETALLOV Vol. 22 No. 3 2020 28 TECHNOLOGY References 1. GOSTR 57558–2017. Additivnye tekhnologicheskie protsessy. Bazovye printsipy . Ch. 1. Terminy i opredeleniya [State standard R 57558–2017. Additive manufacturing. General principles. Pt. 1. Terms and de fi nitions]. Moscow, Standartinform Publ., 2017. 12 p. Mechanical and Tribological Properties of a Metal Wall Grown by an Electric Arc Method in an Atmosphere of Shielding Gas Maxim Kuznetsov 1, a, * , Vladimir Danilov 2, b , Maxim Krampit 3, c , Dmitry Chinakhov 1, 2, d , Mihail Slobodyan 2, e 1 Yurga Institute of Technology, TPU Af fi liate, 26 Leningradskaya st., Yurga, 652055, Russian Federation 2 3 School of Engineering, 24, Leningrad Street, Yurga, 650059, Russian Federation a https://orcid.org/0000-0003-3919-3009, kyznechik_85@mail.ru , b https://orcid.org/0000-0002-5741-7574, dvi@ispms.tsc.ru, с https://orcid.org/0000-0003-3710-9598, savage_jawa@mail.ru , d https://orcid.org/0000-0002-4319-7945, chinakhov@tpu.ru , e https://orcid.org/0000-0002-5718-7027, s.m.s@ngs.ru Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2020 vol. 22 no. 3 pp. 18–32 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2020-22.3-18-32 Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ARTICLE INFO Article history : Received: 22 April 2020 Revised: 19 May 2020 Accepted: 24 June 2020 Available online: 15 September 2020 Keywords : MAG additive manufacturing Tensile strength Yield strength Elongation Tribological properties Funding The study was fi nancially supported by the Russian Foundation for Basic Research in the framework of the scienti fi c project No. 18-38-00036 and the Basic Research Program of the State Academies of Sciences for 2013–2020 (Project No. 23.2.1). ABSTRACT Introduction. At present, additive manufacturing is one of the most promising methods to optimize the production processes of complex metal products. It is based on the layer-by-layer metal deposition in accordance with a three-dimensional model created using computer aided design software. Various metal powders and wires are applied as a feedstock, and a laser or electron beam, as well as an arc can be employed as a heat source. Despite the existing rather large number of developed methods for the complex metal product additive manufacturing, some of them are very expensive that results in a high production cost. Due to this fact, developing equipment and procedures for the layer-by-layer gas metal arc deposition using carbon dioxide as a shielding gas is an urgent task. The aim of the paper is to investigate the mechanical and tribological properties of carbon steel samples built by the layer- by-layer gas metal arc deposition according to the developed procedure. The carbon steel samples, built by layer- by-layer gas metal arc deposition using carbon dioxide as a shielding gas, are studied. The research methods are mechanical tests of tensile strength, yield strength and elongation of grown samples, as well as tribological properties (wear surface area, friction coef fi cient and amplitude of vibrational accelerations). Results and Discussion . It is found that the samples built by the developed additive manufacturing procedure possessed the mechanical properties commensurate with hot-rolled steel. It is established that there is a decrease in linear energy when growing a metal wall according to the developed technology due to preheating of the electrode wire to 400...600 ° C by installing an additional current supply located at a distance of 250…400 mm from the end of the wire to pass the heating current. As a result, the tribological properties of the grown samples are increased and its wear became more uniform. For citation: Kuznetsov M.A., Danilov V.I., Krampit M.A., Chinakhov D.A., Slobodyan M.S. Mechanical and tribological properties of a metal wall grown by an electric arc method in an atmosphere of shielding gas . Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science , 2020, vol. 22, no. 3, pp. 18–32. DOI: 10.17212/1994-6309-2020-22.3-18-32. (In Russian). ______ * Corresponding author Kuznetsov Maxim A. , Ph.D. (Engineering) Yurga Institute of Technology, TPU Af fi liate 26 Leningradskaya st., Yurga, 652055, Russian Federation Tel.: 8 (38451) 7-77-65, e-mail: kyznechik_85@mail.ru Institute of Strength Physics and Materials Science SB RAS, 2/4, Academic Avenue, Tomsk, 635055, Russian Federation