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Power Technology and Engineering

, Volume 53, Issue 3, pp 331–338 | Cite as

Optimization of Restorative Heat Treatment of Turbine Housings Made from Low Alloy Steel

  • V. I. GladshteinEmail author
  • A. A. Lyubimov
Article
  • 3 Downloads

Metal of steel 20KhMFL housings after restorative heat treatment with a different amount of normalizing and high-temperature tempering (1N + T, 2N + T, 3N + 2T) has been studied by experiment for the first time as applied to modernizing turbines. Data for the short-term and stress-rupture strength, ductility in tension, critical brittleness temperature, critical notch opening, and hot hardness of metal, and the amount and number of defects for repair are analyzed. The advantage of heat treatment by a regime with single-stage normalizing and high-temperature tempering (1N + T) is demonstrated.

Keywords

housing metal resource mechanical properties structure specimen heat treatment normalization tempering temperature furnace defect 

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References

  1. 1.
    V. V. Ermolaev, L. A. Zhuchenko, A. A. Lyubimov, V. I. Gladshtein, and V. L. Kremer, “Experience of reconstructing a PT-60-90 turbine with performance of restorative heat treatment for the HPC housing,” Teploénergetika, No. 6, 5 – 14 (2018).Google Scholar
  2. 2.
    V. I. Gladshtein, V. V. Ermolaev, A. I. Shklar, L. A. Vinokurova, A. A. Simanovskii, and V. A. Lodogaliev, “Restorative heat treatment of housing components during turbine renovation,” Teploénergetika, No. 4, 8 – 12 (2007).Google Scholar
  3. 3.
    V. F. Resinskii, V. I. Gladshtein, and G. D. Avrutskii, Increase in the Operating Life of Steam Turbines [in Russian], Izd. Dom MÉI, Moscow (2007).Google Scholar
  4. 4.
    V. I. Gladshtein and A. I. Troitskii, “Study of the reliability of cast flap housing of steel 20KhMFl subjected to restorative heat treatment after 250 thousand hours of operation,” Teploénergetika, No. 2, 7 – 11 (2009).Google Scholar

Copyright information

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

Authors and Affiliations

  1. 1.JSC All-Russia Thermal Engineering InstituteMoscowRussia

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