Method for mechanical characterization of a metal material

• Main Author: PAGNON CLAUDE ANDRE CHARLES,PINTO ERIC CHRISTIAN JEAN,KERNEIS STEPHANE MICHEL,BOUET BERNARD
• Format: Patent
• Language: English
• Published: 30.08.2006
• Subjects: 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

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.