2023 №10 (05) DOI of Article
2023 №10 (07)

The Paton Welding Journal 2023 #10
The Paton Welding Journal, 2023, #10, 35-42 pages

New generation unit for plasma-arc deposition of coatings and spraying of current-conducting wire materials

V.M. Korzhyk, D.V. Strogonov, O.M. Burlachenko, O.V. Ganushchak, O.M. Voitenko

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail:

A plasma-arc unit of industrial type of up to 50 kW total power for deposition of functional coatings on critical parts and spheroidization of wire materials is presented. A feature of the unit is application of a system of water cooling of plasmatron inner components, modified design of the nozzle and cathode parts and reduction of plasmatron overall dimensions, ensuring a higher productivity of the process, widening of its application areas, improvement of mechanical and technological characteristics of the produced granules and coatings, etc. Presented is the microstructure and results of studying the granulometric composition of the dispersed phase, which are indicative of producing dense coatings with less than 1 % porosity, which form from granules of a spherical shape predominantly in a narrow particle size range of 20…100 μm. 17 Ref., 1 Tabl., 9 Fig.
Keywords: plasma-arc spraying, current-conducting wire, coating deposition, spheroidization, particle size distribution, bond strength, density, sphericity

Received: 20.06.2023
Accepted: 14.11.2023


1. Yenni, D., McGill, W., Lyle, J. (1961) Electric arc spraying. United States, Pat. 2982845.
2. Kudinov, V.V. (1962) Deposition of refractory coatings by arc plasma. Tekhnologiya Mashinostroeniya, 21, 41–45 [in Russian].
3. Kudinov, V.V. (1966) Heating of current-conducting wire by constricted arc. Svarochn. Proizvodstvo, 4, 11–13 [in Russian].
4. Krasnov, A.N. (1965) Plasma spraying of tungsten. Poroshk. Metallurgiya, 3, 1–5 [in Russian].
5. Krasnov, A.N. (1965) Plasma spraying of molybdenum. Poroshk. Metallurgiya, 1, 1–5 [in Russian].
6. Bobrov, G.V., Privezentsev, V.I., Umnova, L.V. (1965) Formation of particles in wire melting in plasma flow. Poroshk. Metallurgiya, 1, 79‒86 [in Russian].
7. Petrunichev, V.A., Titkov, V.V. (1977) To mechanism of plasma spraying of wire. Fizika i Khimiya Obrabotki Materialov, 1, 14–16 [in Russian].
8. Zelenin, V.I., Kavunenko, P.M., Tisenkov, V.V. et al. (2009) Application of plasma-arc metallisation for restoration of wheel pairs. The Paton Welding J., 12, 28‒31.
9. Zelenin, V.I., Kavunenko, P.M., Teplyuk, V.M. et al. (2009) Improved technology for restoration of axle necks of wheel pairs of freight-car trucks. Svarshchik, 12, 8–9 [in Russian].
10. Korzhik, V.N., Korob, M.F. (2012) Mechanized line PLAZER 30PL-W for plasma-arc wire spraying of coatings on largesized parts of «shaft» type. Svarshchik, 4, 13–15 [in Russian].
11. Korzhyk, V.M., Khaskin, V.Yu., Yao Yuhui, Demianov, O.I. et al. (2022) Influence of accompanying compressing air flow on the coating structure and properties in plasma-arc spraying by consumable current-conducting wire. The Paton Welding J., 2, 3-10.
12. Bobzin, K., Cook, D., Kowalsky, K. et al. (2007) Thermal spraying of cylinder bores with the PTWA internal coating system. In: Proc. of the ASME Inter. Engine Combustion Engine Division Fall 2007 Technical Conf. ICEF07, 1-8.
13. Sun, P., Fang, Z., Zhang, Y. et al. (2017) Review of the methods for the production of spherical Ti and Ti alloy powder. JOM, 69, 1853-1860.
14. Korzhyk, V.M., Strogonov, D.V., Burlachenko, O.M. et al. (2023) Effectiveness of the process of plasma-arc spheroidization of current-conducting titanium wire. Suchasna Elektrometal., 1, 33-42.
15. Kaplan, M.A., Gorbenko, A.D., Ivannikov, A.Y. et al. (2022) Preparation and investigation of spherical powder made from corrosion-resistant 316L steel with the addition of 0.2 % and 0.5 % Ag. Materials, 7887(15), 13.
16. Cao, M., Gitzhofer, F., Gravelle, D.V. et al. (1997) A torch nozzle design to improve plasma spraying techniques. In: Plasma Sources Science and Technology. IOP Publ., 8.
17. Kalayda, T.A., Kirsankin, A.A., Ivannikov, A.Y. et al. (2021) The plasma atomization process for the TiAlV powder production. J. Phys.: Conf. Ser., 1942, 012046.