Repair method for turbine blades

In a repair method for lengthening turbine blades having undersized blade lengths, a sheet metal strip is preformed in a U-shape and is then used as a support form, for which it is tightly pressed against the upper blade contour in a force-locking and exactly contour-fitting manner by an outer synth...

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Bibliographic Details
Main Author REINHOLD MEIER
Format Patent
LanguageEnglish
Published 05.08.1998
Edition6
Subjects
BLASTING
CLADDING OR PLATING BY SOLDERING OR WELDING
COMBINED OPERATIONS
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINE TOOLS
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
METAL-WORKING NOT OTHERWISE PROVIDED FOR
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
OTHER WORKING OF METAL
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
STEAM ENGINES
TRANSPORTING
UNIVERSAL MACHINE TOOLS
WEAPONS
WELDING
WORKING BY LASER BEAM
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Summary:In a repair method for lengthening turbine blades having undersized blade lengths, a sheet metal strip is preformed in a U-shape and is then used as a support form, for which it is tightly pressed against the upper blade contour in a force-locking and exactly contour-fitting manner by an outer synthetic material surround molding. The sheet metal strip is arranged in such a manner that it protrudes beyond the blade tip and protrudes out of the pressing synthetic material mass. In order to lengthen the turbine blade, the space within the sheet metal strip that protrudes beyond the blade tip is filled by laser deposit or build-up welding. Furthermore, a particular support form is provided for carrying out the lengthening of the turbine blade, and a method for producing the support form is described.
Bibliography:Application Number: GB19960025501