Metal working – Method of mechanical manufacture – Impeller making
Reexamination Certificate
2007-04-17
2007-04-17
Jimenez, Marc (Department: 3726)
Metal working
Method of mechanical manufacture
Impeller making
C029S402060, C029S402080, C029S402180, C029S889721, C029S889720
Reexamination Certificate
active
09935896
ABSTRACT:
A method for repairing defects in a gas turbine component that comprises a substrate and an existing coating on the substrate. The article includes cooling holes having a predetermined air flow requirement and an outer shaped portion and an inner metering portion. The method comprises removing the existing coating and recoating the surface of the article with a nonoriginal coating. After the nonoriginal coating is applied onto the component, the cooling holes that meet a predetermined inspection criteria are reworked to remove the excess nonoriginal coating deposited in the outer shaped portion of the cooling holes. The reworking is done by receiving an electrode, having only a shaped portion with a preselected shape, in the outer shaped portion of the cooling holes thus restoring the cooling holes to the predetermined air flow requirement.
REFERENCES:
patent: 4008844 (1977-02-01), Duvall et al.
patent: 4073639 (1978-02-01), Duvall et al.
patent: 4197443 (1980-04-01), Sidenstick
patent: 4209348 (1980-06-01), Duhl et al.
patent: 4321310 (1982-03-01), Ulion et al.
patent: 4321311 (1982-03-01), Strangman
patent: 4401697 (1983-08-01), Strangman
patent: 4405659 (1983-09-01), Strangman
patent: 4405660 (1983-09-01), Ulion et al.
patent: 4414249 (1983-11-01), Ulion et al.
patent: RE32121 (1986-04-01), Gupta et al.
patent: 4585481 (1986-04-01), Gupta et al.
patent: 4643782 (1987-02-01), Harris et al.
patent: 4719080 (1988-01-01), Duhl et al.
patent: 4726104 (1988-02-01), Foster et al.
patent: 4738588 (1988-04-01), Field
patent: 5062205 (1991-11-01), Fraser
patent: 5068084 (1991-11-01), Cetel et al.
patent: 5081765 (1992-01-01), Fraser et al.
patent: 5092942 (1992-03-01), Fraser et al.
patent: 5156321 (1992-10-01), Liburdi et al.
patent: 5262245 (1993-11-01), Ulion et al.
patent: 5437737 (1995-08-01), Draghi et al.
patent: 5549767 (1996-08-01), Pietruska et al.
patent: 5658614 (1997-08-01), Basta et al.
patent: 6370752 (2002-04-01), Anderson et al.
patent: 6375425 (2002-04-01), Lee et al.
Draghi Peter J.
Ducotey, Jr. Howard S.
Zuber Robert J.
Cunha Linda
Jimenez Marc
United Technologies Corporation
LandOfFree
Method for repairing an apertured gas turbine component does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for repairing an apertured gas turbine component, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for repairing an apertured gas turbine component will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3752668