METHOD FOR WELDING EROSION-RESISTANT METAL MATERIAL AND TURBINE BLADE

摘要

[PROBLEMS] To provide a method of welding a rotor metal material and a turbine blade in which it is possible to suppress the decrease in hardness of the entire layer in the front edge portion of the blade. [MEANS FOR SOLVING PROBLEMS] A method of welding a rustproof metallic material according to the present invention is a method for welding a rustproof metallic material into a base body (1) in a turbine blade front edge portion (1A) A step of forming a radius R of a curved surface in the front edge portion 1A to be larger than a thickness t of the base 1 and a step of welding a metal material into the front edge portion 1A.