Patent ID: 6321448
Filing Date: 2001-11-27
Classification: B23K,B23P,F01D,Y10T

Abstract:
A method of manufacturing a turbine nozzle having a nozzle blade body, the method comprising the steps of:preparing a flat plate;blanking a first support plate that supports an inner ring side of the turbine nozzle from the flat plate by using laser beam cutting;blanking a second support plate that supports an outer ring side of the turbine nozzle from the flat plate by using laser beam cutting;bending each of the first and second support plates so as to form each of the first and second support plates as a ring member;while controlling laser beam based on a program, drilling by the laser beam the ring-formed first and second support plates so as to form holes therethrough, each of said holes having a three-dimensional blade profiles said three-dimensional blade profile correspondig to a three-dimensional profile of the nozzle blade body;inserting the nozzle blade body into the holes of the first and second support plates so as to weld the nozzle blade body thereto by using a laser beam;preparing a diaphragm inner ring and a diaphragm outer ring; andwelding the first and second support plates to the diaphragm inner and outer rings, respectively.