Abstract: A part-holding device in a method for repairing a blade of a monobloc bladed disc of a turbo-machine, through electron-beam welding of a patch onto the blade along a junction plane is disclosed. The device includes a disc supporting device which supports the disc and an adjustable holding device which holds the blade and the patch. The adjustable holding device includes a platen which supports the adjustable holding device, arranged such that the space located above the junction plane allows for an electron beam to pass. The relative positions of the blade and the patch are set using the adjustable holding device that is supported by the platen, while leaving some space allowing for an electron beam to pass. Such a device is simple and reliable.

Abstract: A method of repairing a turbomachine blisk having at least one damaged zone by build-up of metal in the damaged zone using a laser build-up welding machine is disclosed. The method includes preparing the damaged zone by machining the damaged zone to obtain a zone of defined profile to be repaired, build-up welding of a start-of-run test piece that includes the defined profile using the laser build-up welding machine, checking geometric and metallurgical quality of the test piece, and build-up welding the zone to be repaired of the blisk using the laser build-up welding machine.

Abstract: To repair the blade, a patch is welded by an electron beam. The method starts by machining the damaged zone so as to obtain a zone to be repaired having a defined profile; welded on to a first test piece element corresponding to the blade, having said defined profile, is a second test piece element, corresponding to the patch, in order to obtain a start-of-run test piece; the quality of this test piece is verified and, if it corresponds to the repair acceptance criteria, the patch is welded on to the zone to be repaired using the same electron-beam welding machine without changing its operating parameters, and the repaired zone is reworked by machining.