Turbine vane repairing method

A turbine vane repairing method for repairing a damaged spot in a first shroud of an outer shroud and an inner shroud in a turbine vane having a blade body which has a cross section forming a blade profile and extends in a blade height direction perpendicular to the cross section, the outer shroud being provided at an end of the blade body on a first side in the blade height direction, and the inner shroud being provided at an end of the blade body on a second side in the blade height direction, the turbine vane repairing method comprising:

• removing the damaged spot in the first shroud;
• disposing a deformation curbing member which comes into contact with the outer shroud and the inner shroud and curbs change in relative positions of the outer shroud and the inner shroud;
• performing overlay welding with respect to a removed part from which the damaged spot is removed in the first shroud and filling the removed part after the removing of the damaged spot and the disposing of the deformation curbing member;
• detaching the deformation curbing member from the turbine vane after performing the overlay welding;
• and
• polishing at least a surface of a part subjected to the overlay welding in the first shroud.