Patent ID: 9464363
Filing Date: 2016-10-11
CPC Classification: C25D,F01D

Claim Text:
1. A method of electrolytically depositing a composite coating comprising a metallic matrix containing particles, to repair a metal blade, the method comprising: providing at least one blade forming a cathode and presenting a surface to be coated that defines a critical zone and extends in a longitudinal direction between a root and tip of the blade; providing an anode made of a metal and connecting an anode to a current source; providing a solution forming an electrolyte bath and containing insoluble particles; providing a support made of a material that does n conduct electricity, that presents a reference wall, and that is configured to receive the blade in a working position relative to the reference wall; mounting the blade on the support in the working position; placing the support in the solution; and co-depositing particles and metal from the anode to forma coating on the surface to be coated, wherein the anode is placed facing the critical zone, wherein the support is fitted, for each blade, with a longitudinal portion facing the surface to be coated of the blade, the longitudinal portion being fitted with a working wall so as to obtain, on the surface to be coated of the blade, a coating presenting varying thickness that is predetermined and relatively constant for the critical zone and that decreases progressively down to a value of zero along edges of the coating, wherein the surface to be coated of the blade is a suction side wall of the blade, and the critical zone is closer to a leading edge of the blade than a trailing edge of the blade, wherein working wall extends so as to face all of the suction side wall of the blade between the leading edge of the blade and the trailing edge of the blade, a shape of the working wall being complementary to a shape of the suction side of the blade, and wherein the anode is fastened to the longitudinal portion at a location facing the critical zone of the suction side wall of the blade.