Method of repairing an integrally bladed rotor disc, test piece for the beginning and the end of the procedure

The method of repairing an one-piece bladed disc (1) of a turbo machine having damaged zones by metal recharging in the damaged zone using a recharging machine, comprises preparing the damaged zone to obtain a zone of defined profile to be repaired, and checking the one-piece bladed disc using fatig...

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Bibliographische Detailangaben
Hauptverfasser:	PAGNON, CLAUDE, ANDRE, CHARLES, PINTO, ERIC, CHRISTIAN, JEAN, BOUET, BERNARD, KERNEIS, STEPHANE, MICHEL, DERRIEN, GERARD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBINED OPERATIONS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ENGINE PLANTS IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES OTHER WORKING OF METAL PERFORMING OPERATIONS SOLDERING OR UNSOLDERING STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The method of repairing an one-piece bladed disc (1) of a turbo machine having damaged zones by metal recharging in the damaged zone using a recharging machine, comprises preparing the damaged zone to obtain a zone of defined profile to be repaired, and checking the one-piece bladed disc using fatigue test. The metal recharging is carried out on a test piece called start-of-run test piece having a defined profile. The recharging machine is a laser beam machine having the operating parameters, which are preset. A quality of the test piece is verified after the step of recharging. The method of repairing an one-piece bladed disc (1) of a turbo machine having damaged zones by metal recharging in the damaged zone using a recharging machine, comprises preparing the damaged zone to obtain a zone of defined profile to be repaired, and checking the one-piece bladed disc using fatigue test. The metal recharging is carried out on a test piece called start-of-run test piece having a defined profile. The recharging machine is a laser beam machine having the operating parameters, which are preset. A quality of the test piece is verified after the step of recharging, which is carried out by a metal fusion using a laser beam. The zone to be repaired is recharged without changing the operating parameters of the machine. After the zone is repaired, the step of recharging is called an end-of-run test piece, which is identical to the start-of-run first test piece. A constituent metal of the disc is a titanium alloy (Ti17 or TA6V). The damaged zone is located on a top of the blade (3), and is a leading-edge corner (31) or trailing-edge corner (32) of the blade. The non-destructive and/or destructive tests are carried out for checking the quality of recharging. An independent claim is included for a start-of-run or end-of-run test piece.