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

Automatic Welding 2023 #03
Avtomaticheskaya Svarka (Automatic Welding), #3, 2023, pp. 20-26

Experimental determination of velocity of zirconium particles in microplasma spraying

S.M. Kalyuzhny1, V.V. Savytsky1, S.G. Vojnarovych1, O.M. Kyslytsya1, Z.G. Fayzramanov2

1E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
2D. Serikbayev East Kazakhstan Technical University. 69 Protosanov Str., 070004, Ust-Kamenogorsk, Kazakhstan. E-mail: kanc_ekstu@mail.ru

In the work the measurement and analysis of the velocity of dispersed particles from the zirconium wire introduced into the arc gap of the microplasma jet were performed depending on the technological parameters of the spraying process. Using optical digital devices, it was found that in the mentioned studied ranges of the mode parameters, the average velocity of dispersed zirconium particles ranges from 8 ± 2.5 to 28.7 ± 4 m/s. It was established that in the case of a combination of minimum values of current (I = 16 А), the flow rate of plasma-forming gas (Qpl = 160 l/h) and the sprayed wire feed rate (Vw = 2.9 m/min), the formation of particles with a maximum diameter of 310 μm and an average velocity of 8 ± 2.5 m/s is provided. The use of the mentioned values of the mode parameters in the microplasma process of zirconium wire spraying will allow forming a coating with a developed surface and the most porous structure, which can be practically applied on the surfaces of endoprostheses with a cementless fixation. 21 Ref., 1 Tabl., 5 Fig.
Keywords: microplasma coating, zirconium, dispersion, particles velocity

Received: 16.03.2023


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