Method for repairing a rotor

Details Method for repairing a rotor Method for repairing a rotor

B - Operations, Transporting

23

P

B23P 15/02 (2006.01) B23P 6/04 (2006.01) F01D 5/00 (2006.01)

Patent

CA 2084266

A method for repairing a rotor includes severing the rotor into two or more rotor segments. After removing a portion of material including the crack from the rotor, weld metal is deposited onto the rotor until the removed portion is replaced with weld metal. A built-up portion is welded onto a surface positioned adjacent a bore of each of the rotor segments. One of the built-up portions is machined into a female spigot and the other built-up portion is machined into a male spigot for engagement of the rotor segments. The female and the male spigots are engaged far alignment of the rotor segments. The rotor segments are welded together with weld metal, which is deposited in a welding groove formed between the rotor segments and the spigots. After the rotor segments are joined together, the male spigot, the female spigot, and a portion of the weld metal positioned near the root fusion area are removed to restore the bore of the rotor to its original diameter.

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