Repairability analysis of the energy gas turbine rotor blade second stage shroud by high-temperature brazing
Main Article Content
Abstract
The article considers the repair of the energy gas turbine rotor blade second stage shroud. The paper presents an analysis of the possibility of the repair consisting of the replacement of both labyrinth and honeycomb seals by the high-temperature brazing process. All the steps of the repair process were discussed and the results of microscopic metallographic evaluation using a light microscope and a scanning electron microscope were presented. Several advantages related to the use of this technology were indicated.
Downloads
Article Details
Creative Commons CC BY 4.0 https://creativecommons.org/licenses/by/4.0/
Welding Technology Review (WTR) articles are published open access under a CC BY licence (Creative Commons Attribution 4.0 International licence). The CC BY licence is the most open licence available and considered the industry 'gold standard' for open access; it is also preferred by many funders. This licence allows readers to copy and redistribute the material in any medium or format, and to alter, transform, or build upon the material, including for commercial use, providing the original author is credited.
References
Wright I.G., Gibbons T.B., Recent developments in gas turbine materials and technology and their implications for syngas firing. International Journal of Hydrogen Energy, 2007, Vol. 32(16), 3610-3621. https://doi.org/10.1016/j.ijhydene.2006.08.049 DOI: https://doi.org/10.1016/j.ijhydene.2006.08.049
https://www.powermag.com/ge-unveils-new-h-class-gas-turbine-and-already-has-a-first-order/
Sims C.T., Stoloff N.S., Hagel W.C.: Superalloys II, Wiley&Sons, New York, 1987.
Kurz R., Brun K., Degradation in Gas Turbine Systems. Journal of Engineering for Gas Turbines and Power, 2000,
Vol. 123(1). https://doi.org/10.1115/2000-GT-0345 DOI: https://doi.org/10.1115/2000-GT-0345
Pallos K. J., Gas Turbine Repair Technology [GER-3957B online], GE Power Systems, Atlanta, 2004
Rolls-Royc plc, The Jet Engine, The Technical Publications Department Rolls-Royce plc, Derby, 1986
Ginter T., Bouvay T., Uprate Options for the MS7001 Heavy Duty Gas Turbine [GER-3808C online], GE Energy,
Atlanta, 2012
https://www.ge.com/content/dam/gepower-pgdp/global/en_US/documents/service/2018-ps-catalog.pdf
Sporer D., Fortuna D., Selecting Materials for Brazing a Honeycomb in Turbine Engines. Welding Journal, 2014,
Vol. 93(2), 44-48.
Munz O., Pychynski T., Schwitzke C., Bauer H.-J, Continued Experimental Study on the Friction Contact
between a Labyrinth Seal Fin and a Honeycomb Stator: Slanted Position, Aerospace, 2018, Vol. 5(3), 82.
https://doi.org/10.3390/aerospace5030082 DOI: https://doi.org/10.3390/aerospace5030082
Babul T., Kowalski S., Jakubowski J., Senkara J., Kopeć J., Turowska L., Lutowanie próżniowe uszczelnień ulowych w aparatach kierujących wykonanych ze stopów Hastelloy i Inconel z zastosowaniem lutu NiCrSiB, Przegląd Spawalnictwa, 2007, Vol. 79(9), 124-129.
https://www.ge.com/content/dam/gepower-gdp/global/en_US/documents/technical/ger/ger-4217b-uprate- options-ms6001-heavy-duty-gas-turbine.pdf
Chandler H., Heat Treater's Guide: Practices and Procedures for Irons and Steels, ASM International, USA, 1995. Przybyła B., Zapałowicz Z., Review of methods for sealing aviation turbine rotors. Publishing Hous of Rzeszów Univeristy of Technology, Vol. 291, Mechanika 87, 235-243, 2015.