Electric heating – Metal heating – By arc
Reexamination Certificate
2005-11-29
2005-11-29
Shaw, Clifford C. (Department: 1725)
Electric heating
Metal heating
By arc
C029S889100, C219S075000
Reexamination Certificate
active
06969826
ABSTRACT:
A process for repairing a compressor rear frame of a gas turbine engine. The process entails removing a seal flange from the inner casing wall of the frame to define an annular face on the casing wall, and fabricating a replacement flange to have an annular face with a radial width greater than the radial width of the annular face of the casing wall. The faces of the flange and wall are mated to form a joint, a penetration-enhancing flux is deposited adjacent the joint, and a single-pass gas tungsten arc welding operation is performed to form a root weldment that extends completely through the joint. The flux is then removed and a gas tungsten arc welding operation is performed to deposit a filler on the root weldment and form a second weldment that completely overlays but does not penetrate through the root weldment.
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patent: 5400491 (1995-03-01), Yaworsky et al.
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patent: 6607114 (2003-08-01), Reser et al.
patent: 6664508 (2003-12-01), Johnson et al.
Edison Welding Institute, INSIGHTS Materials Joining Newsletter; Spring 2003, vol. 16, No. 2; “EWI Develops Full-Scale Riser Fatigue Test Facility in Columbus, Ohio”.
Harrison William Henry
Peacock Daryl
Trewiler Gary Edward
General Electric Company
Hartman Domenica N. S.
Hartman Gary M.
Narciso David L.
Shaw Clifford C.
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