Method of manufacturing turbine nozzle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 27, 2001
Issued Date -
N/A
app pub date -
Jul 21, 2000
filing date -
Jul 23, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a method of manufacturing a turbine nozzle having a nozzle blade body, a flat plate is prepared. A first support plate for supporting an inner ring side of the turbine nozzle is blanked from the flat plate by using laser beam cutting. A second support plate for supporting an outer ring side of the turbine nozzle is blanked from the flat plate by using laser beam cutting. Each of the first and second support plates in bent so as to form each of the first and second support plates as a ring member. While controlling laser beam based on a program, by the laser beam, the ring-formed first and second support plates are drilled so as to form holes therethrough. At that time, each of the holes has a three-dimensional blade profile, and the three-dimensional blade profile corresponds to a three-dimensional profile of the nozzle blade body. After that, the nozzle blade body is inserted into the holes of the first and second support platen so as to weld the nozzle blade body thereto by using a laser beam. On the other hand, a diaphragm inner ring and a diaphragm outer ring are prepared and the first and second support plates are welded into the diaphragm inner and outer rings, respectively so as to manufacture the turbine nozzle.
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