Process for repairing wide cracks

• Main Authors: ABRILES, BETH K, MOOR, JAMES J, HYDE, JOHN H
• Format: Patent
• Language: English; French; German
• Published: 24.09.2008
• Subjects: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; COMBINED OPERATIONS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; OTHER WORKING OF METAL; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; UNIVERSAL MACHINE TOOLS; WELDING; WORKING BY LASER BEAM

A process for repairing cracks in a workpiece (10), such as a turbine engine component, comprises the steps of: providing a workpiece (10) having a crack (12) to be repaired; applying a nickel or cobalt base alloy material (20) to a root of the crack in an amount sufficient to fill a portion of the crack (12); subjecting the workpiece (10) with the nickel or cobalt base alloy material to a first heat treatment at a temperature in the range of from about 1065,55 to 1260,00°C for a time period in the range of from about 5.0 to 30 minutes; applying a weld material (22) to the crack; and subjecting the workpiece with the weld material to a second heat treatment.