Patent ID: 8049132

Claim:
A method of repairing a turbomachine one-piece bladed disc or blisk having at least one damaged zone, by build-up of metal in said damaged zone by means of a laser build-up welding machine, comprising: preparing the damaged zone by machining the damaged zone so as to obtain a zone of defined profile to be repaired; preparing a start-of-run test piece by machining a test zone, the test zone including the defined profile such that the test zone in the start-of-run test piece has the same geometry as the machined damaged zone in the blisk; build-up welding of the start-of-run test piece using the laser build-up welding machine, the operating parameters of the laser build-up welding machine being preset; validating the operating parameters of the laser build-up welding machine by checking a geometric quality and a metallurgical quality of the test piece and determining if the test piece meets criteria for acceptance; build-up welding of the zone to be repaired of the blisk using the laser build-up welding machine with the validated operating parameters; and re-working the repaired zone.