Method of weld repairing of a section of a metallic cylindrical member

• Main Author: SIMS; JOHN A
• Format: Patent
• Language: English
• Published: 04.02.1992
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; COMBINED OPERATIONS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WELDING; WORKING BY LASER BEAM

A method of repairing a section of a metallic cylindrical member, such as a turbine shaft, having surface defects and a keyway thereon, by machining the surface to a depth less than the depth of the keyway and inserting a half key in the keyway, and machining the combination to provide a continuous surface for welding. A weld material is then deposited over the continuous surface formed to a thickness which provides a diameter greater than the initial diameter of the shaft. The weld material is machined to give a member having the initial diameter and the key member is removed to provide a repaired member having a keyway therein.