Snecma

Snecma Services

Snecma Et Snecma Services

Bernard Bouet

Eric Christian Pinto

Claude Andre Pagnon

Stephane Michel Kerneis

Claude Andre Charles Pagnon

Eric Christian Jean Pinto

Jean-Pierre Ferte

Gerard Derrien

Olivier Gourbesville

Stephane Kerneis

Oliver Gourbesville

Didier Bruno Le Saunier

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.

Method of repairing a blisk and test pieces by welding

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.

Method of repairing a blade of a one-piece bladed disc of a turbomachine and test piece for implementing the method

Growing community of inventors

Gretz Armainvilliers, France

Bernard Bouet