The invention relates to a method for using electron beam to weld ejection of turbine, wherein it comprises: 1, casting ejector room; 2, washing the surface of ejector room; 3, fixing the ejector room in the work bench; 4, using electron welding machine to weld the ejector in vacuum room, while the data should be matched; 5, cooling welded ejector and thermally treating, cooling and welding two semi rings. The invention can welding at single surface and form at two surfaces, without back root cleaning, with high welding quality, high efficiency and reduced producing period. |