Author:
Hlushkova D.B.,Bahrov V.A.,Hrinchenko O.D.,Hnatiuk A.A.,Kalinina N.E.,Kalinin V.T.
Abstract
The reliability of the vane apparatus of steam turbines largely determines the operation of the turbine as a whole. The results of scientific research indicate that the surface operation of the blades in the wet-steam flow is caused by a combination of corrosion and drip erosion. The presence of chemical elements and compounds in the working fluid intensifies the process of blade wear. The pH value of the working environment, which can fluctuate significantly during operation, has a significant effect on the wear characteristics. The influence of methods of strengthening the leading edges of steam turbine blades made of steel is analyzed 15H11MF on corrosion resistance. Corrosion tests of blade samples were carried out, the inlet edges of which were strengthened in three ways: high current amplification, electrospark alloying with T15K6 alloy, electrospark alloying with steel 15H11MF. According to the results of the tests, the layer strengthened by hardening by high-frequency currents has the lowest corrosion rate, the layer strengthened by electrospark alloying with T15K6 hard alloy has the highest. The corrosion rate of the layer reinforced by electrospark alloying of steel 15H11MF is 2.1 less than that of the layer reinforced with T15K6 alloy.
Publisher
Problems of Atomic Science and Technology
Reference7 articles.
1. A.L. Shubenko, A.E. Kovalskii. Dropstroke erosion of blades devices of steam turbines. Forecast and methods of safeguard // Bulletin of the National Technical University “KhPI”: Proceedings Ser.: Power and Heat Engineering Processes and Equipment. Kharkiv: NTU “KHPI”, 2012, N 7, p. 76-87.
2. E.K. Sevidova, V.M. Matsevityi, I.B. Kazak, K.V. Vakulenko. Assessment of protective properties of multi-layer coatings for steam turbine blades // Electronic Processing of Materials. 2007, N 6, p. 4-9.
3. O. Bashar. Enhancement of Corrosion Resistance in Steam Turbines Blades // Nanoparticles Coatings Al-Nahrain Journal for Engineering Sciences (NJES). 2017, v. 20, N 5, p. 1172-1181.
4. S.S. Vinogradova, R.A. Kaidrikov, B.L. Zhuravlev. Calculation of corrosion indicators and parameters of corrosion systems. Kazan: “KNRTU”, 2013, 176 p.
5. A.D. Mingazhev, A.V. Novikov, N.K. Krioni, R.R. Bekishev. Protective coating for steam turbine blades // Oil and Gas Engineering Electronic Scientific Journal. 2014, N 4, p. 257.
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