Obrabotka Metallov 2020 Vol. 22 No. 1

OBRABOTKAMETALLOV Vol. 22 No. 1 2020 25 TECHNOLOGY References 1. Zhivushkin A.A., Kozlova E.A., Chubukov I.A., Marova A.Yu. Osobennosti primeneniya kompozitsionnogo materiala “alyuminii – nitrid bora” v aviatsionnykh dvigatelyakh [Features of application of aluminium – boron nitride composite material in aviation engines]. Vestnik Samarskogo gosudarstvennogo aerokosmicheskogo universiteta = Vestnik of Samara University: Aerospace and Mechanical Engineering , 2009, no. 3 (19), pp. 235–239. 2. Golovanenko S.A., Meandrov L.V. Proizvodstvo bimetallov [Bimetal production]. Moscow, Metallurgiya Publ., 1966. 132 p. 3. Matveev A.S., Matveev M.S. Osobennosti primeneniya konstruktsionnykh materialov pri izgotovlenii elektrodov vakuumnykh priborov [The structural materials features for manufacture vacuum equipment’s electrodes]. Konstruktsii iz kompozitsionnykh materialov = Composite Materials Constructions , 2010, no. 2, pp. 28–31. Complex Analysis of the Process of Electrical Discharge Machining of Bimetallic Steel-Copper Material Evgenii Shlykov a, * , Timir Ablyaz b Perm National Research Polytechnical University, 29 Komsomolsky prospekt, Perm, 614990, Russian Federation a https://orcid.org/0000-0001-8076-0509, Kruspert@mail.ru , b https://orcid.org/0000-0001-6607-4692, lowrider11-13-11@mail.ru Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2020 vol. 22 no. 1 pp. 16–26 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2020-22.1-16-26 Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ARTICLE INFO Article history : Received: 7 December 2019 Revised: 19 December 2019 Accepted: 30 January 2020 Available online: 15 March 2020 Keywords : Copy-piercing electrical discharge machining Cutting conditions Electrode Bimetallic material Funding This work was supported by a grant from the President of the Russian Federation for state support of young Russian doctors of science No. МК - 2072.2019.8 ABSTRACT Introduction. The development of modern engineering necessitates the creation of materials with a combination of properties such as strength, corrosion resistance, heat conductivity, heat resistance, wear resistance, etc. In the manufacture of new types of products with a complex pro fi le, bimetallic materials are widely used. For processing such products, it is advisable to use electrophysical processing methods, one of which is the technology of copy-piercing electrical discharge machining (EDM). Currently, the EDM method is one of the most common methods for processing modern materials. The paper is devoted to improving the ef fi ciency of the EDM of bimetallic materials such as steel-copper. Subjects of research are: unevenness of the material removal of the treated surface, the roughness parameter during the EDM of a steel-copper type bimetallic material under various modes of electric discharge machining. The aim of the work is to increase the ef fi ciency and accuracy of the EDM process of complex-pro fi le bimetallic products electrode tool (ET) with various physical and mechanical properties. Methods. Experimental studies were carried out according to the classical experiment. For the experiments, a copy-piercing electrical discharge EDM machine Smart CNC was used. As a bimetallic processed product, a steel substrate with a deposited coating was used. The base material is steel 09G2S, the surfacing material is M1 copper. As electrode electrodes used: steel 20; duralumin grade D16; copper M2. Results and Discussion. A theoretical model is developed that allows one to calculate the amount of removal of the bimetallic material for steel-copper removal depending on the regimes of EDM and material ET. The convergence of the theoretical model with the results of experimental studies is 15%. An experimental study was made of the wear of ET during the EDM of a bimetallic steel-copper material depending on the modes of EDM and the material of the ET. It is established that during EDM of copper ET in the med and max modes, the wear of ET is minimal and amounts to 0.03 - 0.05 mm, respectively. The roughness parameters are calculated and the treated surface of the bimetallic steel-copper EDM bimetallic material is analyzed at different modes of processing ET with various electrophysical properties. For citation: Shlykov E.S., Ablyaz T.R . Complex Analysis of the Process of Electrical Discharge Machining of Bimetallic Steel-Copper Material. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science , 2020, vol. 22, no. 1, pp. 16– 26. DOI: 10.17212/1994-6309-2020-22.1-16-26. (In Russian). ______ * Corresponding author Shlykov Evgenii S., Ph.D. (Engineering), Associate Professor Perm National Research Polytechnical University, 29 Komsomolsky prospekt, 614990, Perm, Russian Federation Tel.: 8 (342) 2-198-324, e-mail: Kruspert@mail.ru