Abstract: A process for repairing a metallic shroud of a gas turbine blade includes a step of removing a portion of an anti-wear layer to a removal depth that is greater than a depth of wear of the anti-wear layer. Further, the process includes a step of leaving a trace of the anti-wear layer to subsist, wherein the trace of the anti-wear layer extends at least in a re-entrant zone of the Z profile of the blade. The process also includes a step of depositing a new layer of anti-wear material on the trace of the anti-wear layer.

Abstract: The invention relates to a method of manufacturing a hollow metal blade, comprising at least one side wall and a recessed tip cap, characterized in that: a) a hollow blade, which comprises at least one side wall and the tip of which is open, is manufactured by casting; b) a plate of a laminate, comprising at least the metal of the blade and a brazing material, is manufactured; c) the plate is brazed to the top of the side wall of the blade by pressing the plate onto the blade; and d) the recessed tip cap, comprising at least a bottom and at least a squealer tip, is machined in the plate. Thanks to the invention, since the blade is manufactured beforehand with an open tip, the core can be held in place, during the casting operation, by the top, thereby ensuring great precision in the positioning of the core and therefore in the thickness of the walls of the blade. The invention also relates to a method of repairing a blade.

Abstract: The invention relates to a repair process of a metallic piece, in particular of a rotor or stator blade of a gas turbine motor comprising an anti-wear layer formed by loading by welding of an anti-wear material to a part of its surface and whereof said layer is partially machined, characterised in that it comprises a rectification stage of said layer in which a trace of said original anti-wear layer is left to subsist on at least part of the base of the rectified zone, and a stage in which a new layer of anti-wear material is deposited by welding. The invention in particular relates to turbine blades with a shroud and has the advantage of at the same time ensuring good adhesion of the new layer and preventing the appearance of defects in the metallic substrate.