STRUCTURAL BRAZE REPAIR OF HARD-TO-WELD SUPERALLOY COMPONENTS USING DIFFUSION ALLOY INSERT

摘要

To provide service-run parts with a great mechanical strength with a controlled narrow brazing gap size.SOLUTION: A method comprises the steps of: machining a tapered slot in a component 101; measuring the tapered slot to determine the dimensions 102; forming an insert to have a geometry corresponding to the tapered slot with a braze gap between an outer surface of the insert and an inner surface of the tapered slot 103; depositing a layer of a braze material on the outer surface of the insert 104, where the thickness of the layer corresponds to the braze gap; sintering the layer of the braze material on the outer surface of the insert to fabricate a diffusion layer 105; positioning the insert in the tapered slot 106; and brazing the diffusion layer to join the insert to the tapered slot 107. The treated component includes a surface having a tapered slot, an insert, and a braze joint.SELECTED DRAWING: Figure 1