Title:
METHOD OF REPAIRING TURBINE BLADE
Document Type and Number:
WIPO Patent Application WO/2004/046560
Kind Code:
A1
Abstract:
A method of repairing a turbine blade fitted to a rotor (desirably a blower for blast furnace) in a corrosive environment capable of extending the service life of the turbine blade, characterized by comprising the steps of applying a hammering treatment by ultrasonic vibration terminal to a surface with corrosive pits before the corrosive pits produced on the surface of the turbine blade are grown to an averaged diameter of 50 μm or larger to reduce the depth of the corrosive pits to 5 μm or shallower.
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Inventors:
ISHIKAWA TADASHI (JP)
NAKASHIMA KIYOTAKA (JP)
NOSE TETSURO (JP)
NAKASHIMA KIYOTAKA (JP)
NOSE TETSURO (JP)
Application Number:
PCT/JP2003/014333
Publication Date:
June 03, 2004
Filing Date:
November 11, 2003
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
ISHIKAWA TADASHI (JP)
NAKASHIMA KIYOTAKA (JP)
NOSE TETSURO (JP)
ISHIKAWA TADASHI (JP)
NAKASHIMA KIYOTAKA (JP)
NOSE TETSURO (JP)
International Classes:
F01D5/12; B23P6/00; F01D5/28; F01D25/00; F02C7/00; F04D29/38; (IPC1-7): F04D29/38; F01K25/00; F02C7/00
Foreign References:
| EP1055480A2 | 2000-11-29 | |||
| JP2002144079A | 2002-05-21 | |||
| US6171415B1 | 2001-01-09 | |||
| JP2000237864A | 2000-09-05 |
Attorney, Agent or Firm:
Aoki, Atsushi (ISHIDA & ASSOCIATES Toranomon 37 Mori
Bldg., 5-1, Toranomon 3-chom, Minato-ku Tokyo, JP)
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