Title:
GAS TURBINE BLADE REPAIR METHOD AND GAS TURBINE BLADE
Document Type and Number:
WIPO Patent Application WO/2020/246156
Kind Code:
A1
Abstract:
A gas turbine blade repair method including: a step in which a thermal barrier coating is removed to expose at least part of a base material of a gas turbine blade; a first etching step in which the exposed base material is etched; a first identification step in which a base material deterioration layer that is harder than the base material is identified from the etched base material; a first removal step in which the identified base material deterioration layer is removed; and a step in which, after a determination has been made in the first identification step that there is no base material deterioration layer or after the base material deterioration layer is removed in the first removal step, a thermal barrier coating is applied to the exposed base material.
Inventors:
NAMBA KATSUMI (JP)
YAMADA MASAHIRO (JP)
ISHIDA MASAHARU (JP)
KIMURA RYOSUKE (JP)
OKAYASU RIN (JP)
KAWACHI YOSUKE (JP)
DATE YASUKI (JP)
YAMADA MASAHIRO (JP)
ISHIDA MASAHARU (JP)
KIMURA RYOSUKE (JP)
OKAYASU RIN (JP)
KAWACHI YOSUKE (JP)
DATE YASUKI (JP)
Application Number:
PCT/JP2020/017049
Publication Date:
December 10, 2020
Filing Date:
April 20, 2020
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F02C7/00; C25F3/02; F01D5/18; F01D25/00; F02C7/24; G01N23/223
Foreign References:
| JPH07229402A | 1995-08-29 | |||
| JP2013160619A | 2013-08-19 | |||
| US20140157597A1 | 2014-06-12 | |||
| US20130086784A1 | 2013-04-11 | |||
| JP2013160619A | 2013-08-19 |
Other References:
See also references of EP 3954883A4
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (JP)
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