METHOD OF HIGH TEMPERATURE LASER WELDING

• Main Authors: ARNETT MICHAEL D, KOTTILINGAM SRIKANTH C, NOWAK DANIEL A, MUKIRA CHARLES G
• Format: Patent
• Language: English
• Published: 24.07.2008
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ENGINE PLANTS IN GENERAL; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; 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; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; STEAM ENGINES; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

PROBLEM TO BE SOLVED: To provide a method of high temperature laser welding. SOLUTION: A method of welding superalloy components comprises: a step of preheating one or more components to be welded to a temperature of 1,500°F and over in a substantially enclosed inert gas atmosphere; a step of supplying a plurality of fillers including at least two of the fillers having different compositions to the weld zone; and a step of welding the one or more preheated components utilizing a laser beam, while maintaining the preheat temperature. COPYRIGHT: (C)2008,JPO&INPIT