Patent ID: 8876978
Filing Date: 2014-11-04
Classification: C23F,F01D,F05D

Abstract:
1. A method for regenerating a gas turbine blade, the method comprising: a step of hot water washing at which the gas turbine blade after being operated is immersed into hot water; a step of inspecting a strong alkaline washing solution at which whether or not a detergency of the strong alkaline washing solution satisfies a standard is determined; a step of strong alkaline washing at which the gas turbine blade after the step of hot water washing is washed by being immersed into the strong alkaline washing solution after the step of inspecting the strong alkaline washing solution; a step of first water washing at which the gas turbine blade after being washed with the strong alkaline washing solution is washed with water; a step of inspecting a weak acid washing solution at which whether or not a detergency of the weak acid washing solution satisfies a standard is determined; a step of weak acid washing at which the gas turbine blade after the step of first water washing is washed by being immersed into the weak acid washing solution after the step of inspecting the weak acid washing solution; a step of second water washing at which the gas turbine blade after the step of the weak acid washing is washed with water; a step of heat treatment at which the gas turbine blade after the step of second water washing is subjected to heat treatment; and a step of removing coating at which at least a part of coating formed on a surface of the gas turbine blade is removed by immersing the gas turbine blade after the heat treatment into a strong acid washing solution.