The Paton Welding Journal, 2021, №10



2021 №10 (05)

DOI of Article 10.37434/tpwj2021.10.06

2021 №10 (07)

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The Paton Welding Journal, 2021, #10, 38-46 pages

Improving the reliability of power complex equipment by electric arc spraying

A.V. Hruzevych¹ and V.V. Shvets²

¹Trypillia TPP PJSC «Centrenergo» 1 Promyslova Str., 08720, Ukrainka, Ukraine Institute of Magnetism of the NASU and Ministry of Education and Science of Ukraine 36-b Akademik Vernadsky Blvd, 03142, Kyiv, Ukraine
²Chief Technologist Department «REZON», LLC 1 Geofizychna Str., 49057, Dnipro, Ukraine

Abstract
The aim of the work is studying the efficiency of spraying application to improve the reliability of TPPs power equipment. A feasibility study indicated that the introduction of spraying technology can reduce losses in case of TPPs emergency shutdowns by 1.5–3.0 times a year, and the estimated extension of the service life of surfaces increases by 1.7–2.5 times. Since the main type of wear in the feed-water economizer (FWE) of TPP boilers is ash wear, and corrosion between the spacing bars, a comprehensive solution was proposed for the problem of extending the service life of boiler waterwall tubes and economiser tubes through development of new heat-resistant and wear-resistant thermal coatings.
Keywords: spraying, welding, thermal power plant, ash wear, corrosion, electric arc coating

Received: 20.08.2021
Accepted: 11.11.2021

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