05. Vlasenko V.D., Ivanov V.I., Aulov V.F., Konevtsov L.A., Martynova E.G., Hasan I.H. Modelling the Temperature Field of a Surface in Using Electrospark Alloying of Metals.

UDK 621.9.048.4: 001.891.57

DOI: 10.15507/2658-4123.029.201902.218-233

Modelling the Temperature Field of a Surface in Using Electrospark Alloying of Metals

Victor D. Vlasenko
Scientific Secretary, Computing Center of Far Eastern Branch RAS (65 Kim Yu Chen St., Khabarovsk 680000, Russia), Ph.D. (Physics and Mathematics), ResearcherID: E-2432-2019, ORCID: https://orcid.org/0000-0001-7782-4532, This email address is being protected from spambots. You need JavaScript enabled to view it.

Valery I. Ivanov
Head, Electric Technology Laboratory, Federal Scientific Agroengineering Center VIM (5 1^st Institutskiy Proyezd, Moscow 109428, Russia), Ph.D. (Engineering), ResearcherID: H-4076-2018, ORCID: https://orcid.org/0000-0002-4568-8553, This email address is being protected from spambots. You need JavaScript enabled to view it.

Vyacheslav F. Aulov
Leading Researcher, Laboratory of Electrospark and Thermal Diffusion Processes, Federal Scientific Agroengineering Center VIM (5 ^st Institutskiy Proyezd, Moscow 109428, Russia), Ph.D. (Engineering), ResearcherID: E-4179-2019, ORCID: https://orcid.org/0000-0001-6925-1260, This email address is being protected from spambots. You need JavaScript enabled to view it.

Leonid A. Konevtsov
Researcher, Institute of Materials Science of the Khabarovsk Scientific Center of Far Eastern Branch RAS (153 Tikhookeanskaya St., Khabarovsk 680042, Russia), Ph.D. (Engineering), ResearcherID: H-4087-2018, ORCID: https://orcid.org/0000-0002-7212-3953, This email address is being protected from spambots. You need JavaScript enabled to view it.

Elena G. Martynova
Postgraduate Student, Chair of Technical Service of Machines, National Research Mordovia State University (68/1 Bolshevistskaya St., Saransk 430005, Russia), ResearcherID: C-5023-2019, ORCID: https://orcid.org/0000-0002-6870-0498, This email address is being protected from spambots. You need JavaScript enabled to view it.

Ismail H. Hasan
Postgraduate Student, Chair of Solid State Physics, Institute of Physics and Chemistry, National Research Mordovia State University (68/1 Bolshevistskaya St., Saransk 430005, Russia), ResearcherID: С-5025-2019, ORCID: https://orcid.org/0000-0002-4560-1016, This email address is being protected from spambots. You need JavaScript enabled to view it.

Introduction. At present, the problem of increasing performance properties of machine parts, tools and tooling by improving the physical, chemical and mechanical characteristics of their executive working surfaces is relevant. One of the modern methods of obtaining coatings on the surfaces of parts is the method of electrospark alloying. In the case of electrospark alloying, it is important to select the thermophysical properties of materials to obtain coatings with desired physicomechanical and tribological properties. The paper presents the results of the method development for calculating the unsteady temperature field of the processed material (cathode) having the form of a rectangular parallelepiped, on one side of which a doped layer is formed during electrospark alloying.
Materials and Methods. To form doped layers in a drop-shaped electro-mass transfer, we used iron in the form of a parallelepiped as a being processed material (cathode) and tungsten was used as a processing material (anode). A nonlinear initial boundary value problem and a computational scheme are suggested for determining the temperature at all points (temperature field) of the cathode made in the form of a parallelepiped with the location of several heat-emitting drops on its face.
Results. The paper presents an algorithm for solving the problem by the second Green’s formula of finding the temperature field in the cathode made in the form of a parallelepiped, in this case the described nonlinear model of the flow from droplets to the parallelepiped is replaced by a linear model. An algorithm is constructed and calculations are carried out to determine the temperature values at all points and the temperature flow in the cathode in the case of one average drop on its face. According to this algorithm, a software package was created and experimental calculations were carried out. The dynamics of temperature values at all points and the heat flux of the cathode points under study is shown.
Discussion and Conclusion. To achieve higher coating properties and a greater efficiency of the electrospark alloying, it is necessary to calculate the temperature field and heat flow of the cathode points under studying. The proposed mathematical model is calculated for the case of one drop placed on the boundary of a heat-conducting half-space. When choosing an anode material depending on the erosion resistance to obtain the required thickness of the surface layers with the specified functional properties, the developed calculation method is used, which allows us to describe the cooling process of one drop and then use this information to average the description of the effect of heating the parallelepiped body by a number of such drops.

Keywords: electrospark alloying, anode, cathode, temperature field, alloying of metals, modelling the temperature field

Funding: The study was conducted with the financial support of the Russian Foundation for Basic Research and the Government of the Republic of Mordovia in the framework of the research project No. 18-43-130003\18 «Study of the wear intensity of the working surfaces of friction pairs formed by electric spark coatings».

For citation: Vlasenko V.D., Ivanov V.I., Aulov V.F., Konevtsov L.A., Martynova E.G., Hasan I.H. Modelling the Temperature Field of a Surface in Using Electrospark Alloying of Metals. Inzhenernyye tekhnologii i sistemy = Engineering Technologies and Systems. 2019; 29(2):218-233. DOI: https://doi.org/10.15507/2658-4123.029.201902.218-233

Contribution of the authors: V. D. Vlasenko – the development of concept and plan of the article, conducting theoretical research; V. I. Ivanov – the development of algorithm for finding the temperature field, edition of the article; V. F. Aulov – the analysis of the results; L. A. Konevtsov – the formulation of conclusions, writing the text; E. G. Martynova – experimental research, review and analysis of literature; I. H. Hasan – participation in the preparation of the initial data.

All authors have read and approved the final version of the paper.

Received 11.02.2019; revised 22.04.2019; published online 28.06.2019

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