Welding method for rotating shafts

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United States of America Patent

PATENT NO 5280849
SERIAL NO

07957225

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An improved welding method is provided for repairing rotating shafts, particularly cracked high pressure steam turbine rotors. The welding method preferably employs a 2.25Cr--1.0Mo--0.3V-type welding filler metal, preferably deposited using a narrow groove automatic gas tungsten arc welding technique. A narrow groove is formed in the rotor to remove the crack. The groove is preheated, filled with the welding filler metal, and postheated, resulting in a strong, high temperature resistant, long lasting weld.

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Patent Owner(s)

Patent OwnerAddress
EXELON GENERATION COMPANY LLC4300 WINFIELD ROAD WARRENVILLE IL 60555

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Galanes, George W Wheaton, IL 2 31

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  • 13 Citation Count
  • B23P Class
  • 76.04 % this patent is cited more than
  • 31 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges28264621933121101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6071 - 8081 - 90100 +020406080100120140160180200220240260280

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