Fabrication Method of Steam Turbine Blade Equipped with Erosion Shield

A method of fabricating a steam turbine blade equipped with an erosion shield, comprising the steps of:

• preparing constituent elements for a steam turbine blade equipped with an erosion shield, including the steam turbine blade having a blade part, the erosion shield to be joined to a leading edge part of the blade part on the tip side thereof, and a shim to be disposed between the blade part and the erosion shield at the time of the electron beam welding, wherein any of the constituent elements has a backing part to serve as a backing for preventing burn through of molten metal at the time of the electron beam welding;
• assembling the constituent elements so that the backing part is arranged on the back side of a groove;
• performing electron beam welding to the leading edge part of the blade part, the erosion shield and the shim while utilizing the backing;
• and
• applying a machining work including removal of the backing part after the electron beam welding so as to be finished up in the final shape of the blade part as a target.