Patent ID: 8720057

Claim:
A method for reconditioning a turbomachine rotor ( 10 ), which is equipped with circumferentially extending rotor grooves ( 12 ) for accommodating rotor blades ( 13 ) which are retained in the rotor grooves ( 12 ) at a distance from each other by spacers ( 14 , 15 ), the method comprising: a) removing the rotor blades ( 13 ) and spacers ( 14 , 15 ) from the rotor grooves ( 12 ) which are to be reworked; b) hollowing out the exposed rotor grooves ( 12 ), simultaneously widening the rotor grooves ( 12 ) in order to remove damage-inflicted material; c) introducing at least one circumferentially extending lateral groove ( 21 ) for accommodating a filler piece ( 22 , 23 ) in the rotor grooves ( 12 ) such that a gap (S) between rotor blades ( 13 ) and hollowed-out rotor grooves ( 12 ) is filled out by the filler piece ( 22 , 23 ); d) providing new spacers ( 14 ′, 14 ″, 15 ′, 15 ″) which are matched to the hollowed-out rotor grooves ( 12 ) and have recesses ( 17 ) which are matched to the introduced lateral grooves ( 21 ); e) providing filler pieces ( 22 , 23 ) for inserting into the circumferentially extending lateral grooves ( 21 ) and recesses ( 17 ) of the new spacers ( 14 ′, 14 ″, 15 ′, 15 ″); and f) inserting the rotor blades ( 13 ) and new spacers ( 14 ′, 14 ″, 15 ′, 15 ″) into the hollowed-out rotor grooves ( 12 ) and inserting corresponding filler pieces ( 22 , 23 ) into the lateral grooves ( 21 ) and matched recesses ( 17 ) of the new spacers ( 14 ′, 14 ″, 15 ′, 15 ″).