METHOD OF REGENERATING GAS TURBINE BLADE AND GAS TURBINE BLADE REGENERATING APPARATUS

摘要

Change of the mechanical properties of gas turbine blade base material is reduced in the repair/regeneration of gas turbine blades. Accordingly, the gas turbine blades after operation are dipped in a strongly alkaline cleaning liquid to clean the same (step S4), and the gas turbine blades having been cleaned by the strongly alkaline cleaning liquid are washed by water (step S5). The gas turbine blades after water washing are dipped in a weakly acidic cleaning liquid to clean the same (step S10), and the gas turbine blades having been cleaned by the weakly acidic cleaning liquid are subjected to heat treatment (step S14). Thereafter, the gas turbine blades after heat treatment are dipped in a strongly acidic cleaning liquid to thereby remove any coating formed on the surface of the gas turbine blades (step S15).