TURBINE BLADE MAINTENANCE METHOD

After a bonding coat layer removal step wherein a bonding coat layer (first coating layer) is removed by a chemical process, and a cleaning step wherein a turbine blade is cleaned by blast processing, an adhesion cleaning step (blast particle cleaning step) is executed, wherein an ultrasonic cleanin...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEUCHI, Yasushi, INOUE, Yoshiyuki, KAWACHI, Yosuke
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CLEANING CLEANING IN GENERAL COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS GRINDING HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POLISHING PREVENTION OF FOULING IN GENERAL STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	After a bonding coat layer removal step wherein a bonding coat layer (first coating layer) is removed by a chemical process, and a cleaning step wherein a turbine blade is cleaned by blast processing, an adhesion cleaning step (blast particle cleaning step) is executed, wherein an ultrasonic cleaning process (steps S22, S25), in which the turbine rotor blade is immersed in a water bath and ultrasound waves are transmitted in the water bath to clean the turbine rotor blade, and a pressurized water cleaning process (steps S23, S26), in which pressurized water is injected into an internal cooling flow path after the ultrasonic cleaning process, are performed one or more times, and after the adhesion cleaning step a heat-tint step is executed.