The possible causes of residual deflections in seamless forged rotors are examined. It is shown that measures to eliminate a residual deflection must take its cause into account. A method for correction of rotors proposed by the Leningrad Metal Factory (LMZ), which involves mounting special systems of balanced and “antibalancing” loads on a bent rotor, is analyzed. Calculations show that even the elastic stresses owing to operation of a flexible rotor beyond its critical rotation frequency and, as a rule, exceeding those stresses which the authors of this method propose creating, do not result in correction of a bent rotor.
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Translated from Élektricheskie Stantsii, January 2009, No. 1, pp. 10–15.
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Ur’ev, E.V., Kistoichev, A.V. & Oleinikov, A.V. Correction of rotors by systems of balanced loads. Power Technol Eng 43, 103–107 (2009). https://doi.org/10.1007/s10749-009-0082-7
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DOI: https://doi.org/10.1007/s10749-009-0082-7