| 摘要 |
PROBLEM TO BE SOLVED: To shorten time for assembling and adjusting, and to easily attach a nozzle blade body of three dimensional blade shape to each of a nozzle inner- and outer-ring side wear plates and to each of diaphragm inner- and outer-rings. SOLUTION: The manufacture method of a turbine nozzle comprises steps of: blanking a nozzle inner side wear plate 13 and a nozzle outer side wear plate 14 from a flat plate by laser beam cutting; applying bending to the nozzle inner side wear plate 13 and the nozzle outer side wear plate 14 to form them into ring pieces; punching the nozzle inner side wear plate 13 and the nozzle outer side wear plate 14 formed into ring pieces such that the punched part has a shape of three dimensional blade; inserting both ends of a nozzle blade body 15 into the nozzle inner side wear plate 13 and the nozzle outer side wear plate 14 and welding them by a laser beam; and connecting the nozzle inner side wear plate 13 and connecting the nozzle outer side wear plate 14 with a diaphragm inner ring 16 and a diaphragm outer ring 17, respectively, by electron beam welding or the like. |
