Patent ID: 9186740
Filing Date: 2015-11-17
Classification: B23K,B23P,F01D,Y10T

Abstract:
1. A method for joining superalloy structures, comprising: forming a recess in a superalloy component substrate having a recess profile defined by the remaining substrate; forming a mating superalloy splice having a splice projection, with a projection profile conforming with the substrate recess profile along a corresponding contact surface; interposing brazing alloy between the recess and repair splice along the contact surface; inserting and capturing the splice within the recess, so that the projection and recess are in abutting contact along the contact surface; compressing the substrate and splice projection together along the contact surface at a selected pressure; conductively contacting the substrate and splice with separate electric resistance brazing electrodes; and passing current at a selected flow rate and application time period through the substrate and splice projection between the electrodes until brazing alloy melting occurs along the contact surface, and ceasing further current flow after the substrate and splice projection are mutually affixed to each other.