Electrolytic-plasma method of removing the heat-resistant coating from the surface of nickel alloy products

Pavlova T.V., Dobrynin D.A., Avanesyan T.G., Muboyadzhyan S.A.
UDC
629.7.023.224
DOI
10.18577/2307-6046-2018-0-5-90-100
Article PDF (Russian) (903.86 KB)
How to cite
Pavlova T.V., Dobrynin D.A., Avanesyan T.G., Muboyadzhyan S.A. Electrolytic-plasma method of removing the heat-resistant coating from the surface of nickel alloy products // Proceedings of VIAM. 2018. No. 5. DOI: 10.18577/2307-6046-2018-0-5-90-100. URL: https://test.viam.ru/en/journal/2018/5/10
Keywords
electrolyte-plasma treatment, coating removal, nickel alloy, microdischarge, gas turbine engine, fluorine ion.
Abstract

To increase the reliability and the service life of gas turbine engine (GTE) blades, heat-resistant coatings are used. The repeated use of the GTE blades after their operation or in violation of the technology of applying protective coatings is possible only in case of removing the defective coating and subsequent preparation of the blade surface for its repeated application. The currently used surface preparation methods for re-applying protective coatings are based on the preliminary cleaning of the GTE blades from the combustion products of the fuel, removal of protective coatings and surface finishing. A comparative analysis of traditional methods of removing spent coatings has shown that the electrolytic-plasma treatment method is distinguished by high productivity, high quality of the treated surface, no need for intermediate preparation stages, and its environmental friendliness. The disadvantages of this method include the inability to process the internal cavities of parts, a

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