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Title:
鋳造ノズルの組み立て式修理
Document Type and Number:
Japanese Patent JP4474146
Kind Code:
B2
Abstract:
A method for repairing a turbine nozzle segment having at least one vane disposed between outer and inner bands includes separating the inner band from the nozzle segment, and joining the inner band to a newly manufactured replacement casting (30) having an outer band (32) and at least one vane (34). The replacement casting (30) includes a mounting platform (44) formed on one end of the vane (34) and a boss (46) formed on the mounting platform (44). A collar is joined to the inner band and has a slot formed therein. The boss (46) is then inserted into the slot, and the mounting platform (44) is received in a recess formed in the inner band. Joining is completed by joining the boss (46) to the collar and the mounting platform (44) to the inner band. The thickness of the collar is tapered in an axial direction, and a relief is formed in the collar to provide assembly clearance with adjacent components.

Inventors:
James Walter Caddell
Matthew Nicklas Miller
Brian Alan Norton
Application Number:
JP2003385261A
Publication Date:
June 02, 2010
Filing Date:
November 14, 2003
Export Citation:
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Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
F01D9/04; F02C7/00; B23P6/00; F01D5/00; F01D25/00
Domestic Patent References:
JP2002168133A
JP2001271604A
JP1294901A
Foreign References:
US3836282
EP1227218A2
Attorney, Agent or Firm:
Arakawa Satoshi
Hiroshi Ogura
Nobukazu Ito