2023 №03 (03) DOI of Article
2023 №03 (05)

Electrometallurgy Today 2023 #03
Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2023, #3, 19-27 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: office@paton.kiev.ua

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


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