Repair method of rotor
AssigneeMitsubishi Heavy Industries Compressor Corporation
InventorsKohei Ogawa, Hiroaki Oka, Hiroshi Nakajima, Koshiro Niihara
Life of this patent
Estimating the term…
Abstract
A repair method is a repair method of a rotor including a rotor body extending in an axial direction about an axis and a plurality of impellers arranged in the axial direction and fixed to the rotor body, the repair method including: a step of performing welding on a repair area of the rotor body to fill a damaged portion with a welded portion; a step of performing heat treatment only on the repair area in the rotor after the welding is performed; and a step of scraping a part of the welded portion after the heat treatment is performed, to form a processing surface smoothly connected to an outer surface.
Claims6
A repair method of a rotor including a rotor body extending in an axial direction about an axis and a plurality of impellers arranged in the axial direction and fixed to the rotor body, the repair method comprising:
- a step of performing welding on a repair area of the rotor body to fill a damaged portion formed to be recessed from an outer surface of the rotor body with a welded portion;
- a step of performing heat treatment only on the repair area in the rotor after the welding is performed;
- and
- a step of scraping a part of the welded portion after the heat treatment is performed, to form a processing surface smoothly connected to the outer surface.
Dependencies are inferred from the claim text.