Power Technology and Engineering

, Volume 53, Issue 2, pp 208–212 | Cite as

Restoration of Steam Turbine Last Stage Rotor Blades by Laser Surfacing

  • D. V. NastekaEmail author
  • O. E. Grachev
  • V. M. Silevich
  • A. I. Lebedeva

Technology is provided for restoring erosion damaged rotor blades of the last stages of steam turbine low-pressure cylinders (LPC) using laser-powder surfacing and application of an erosion-resistant coating. For this method there is typically low heat input into the blade basic metal, which improves its restoration reliability. Results are obtained for comprehensive experimental studies on specimens and blades, confirming the high quality of welded joints obtained by laser surfacing of nickel alloy proposed for restoring the blade profile of blade steels ÉI961-Sh and 15Kh11MF-Sh, and application of a stellite-6 erosion-resistant coating. The possibility is concluded of using the laser-powder surfacing method during refurbishment of steam turbine LPC rotor blades.


steam turbine rotor blades erosion damage blade restoration laser-powder surfacing 


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  1. 1.
    V. A. Ryzhenkov, A. I. Lebedeva, and A. F. Mednikov, “Contemporary state and methods for resolving the problem of erosion wear blades of the wet-steam stages of turbines,” Teploénergetika, No. 9, 8 – 13 (2011).Google Scholar
  2. 2.
    F. A. Khromchenko, V. A. Lappa, I., V. Fedina, et al. “Technology for repair of steam turbine rotor blades. Part 2. Repair by a combined method of welding and surfacing,” Svaroch. Proizvod., No. 2 (1999).Google Scholar
  3. 3.
    F. G. Gosnerovskii, Yu. K. Petrenya, and V. M. Silevich, “Endurance of steam turbine rotor blades taking account of repair under electric power station conditions,” Élektr. Stantsii, No. 3 (2000).Google Scholar
  4. 4.
    A. V. Belyakov, V. I. Shapin, and A. N. Gorbachev, “Practice of forming electric-park coating for strengthening and restoring blade equipment of the through section of steam turbines of thermal and atomic power stations,” Vestnik IGÉU, No. 4 (2008).Google Scholar
  5. 5.
    O. E. Grachev, V.M. Neuimin, and D. V. Nasteka, “Improvement of repair efficiency, preparation and operation of thermal power station equipment by using gasothermal coating application and laser surfacing,” Énergetika. Izv. VUZov Énerg. Ob’ed SNG, No. 6, 55 – 61 (2015).Google Scholar
  6. 6.
    L. Kh. Baldaev, et al., Gasothermal Surfacing [in Russian], JSC Staraya Basmannaya, Moscow (2015).Google Scholar
  7. 7.
    A. I. Lebedeva and D. V. Nasteka, “Contemporary methods for steam turbine blade restoration,” Élektr. Stantsii, No. 8 (2018).Google Scholar
  8. 8.
    A. G. Grigor’yants, I. N. Shiganov, and A. I. Misyurov, Laser Treatment Production Processes: High School Textbook [in Russian], Izd. MGTU im. N. É. Baumana, Moscow (2008).Google Scholar
  9. 9.
    A. G. Grigor’yants and A. N. Safonov, Laser Engineering and Technology. Book 6. Bases of Alloy Laser Strengthening [in Russian], Vyssh. Shkola, Moscow (1988).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • D. V. Nasteka
    • 1
    Email author
  • O. E. Grachev
    • 2
  • V. M. Silevich
    • 3
  • A. I. Lebedeva
    • 4
  1. 1.JSC Quartz GroupMoscowRussia
  2. 2.PJSC UniproMoscowRussia
  3. 3.OJSC NPO TsKTISt. PetersburgRussia
  4. 4.National Research University MEI (NIU MEI)MoscowRussia

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