Abstract: A device for surfacing a metal alloy part by laser welding, the part including a recess to be surfaced and located at a planar area of the part, the device including first and second protective elements arranged on either side of the recess, the first and second protective elements each having an irradiation surface which is to be at least partially covered with a layer of powder to enable welding by passing a laser beam over the powder, the laser beam passing over the irradiation surface of the first protective element during welding and then the irradiation surface of the second protective element, the second protective element having a shape for containing a layer of powder having a height that is greater at the end, in the direction of propagation of the laser beam during welding, of the second protective element than at the start of the second protective element.

Abstract: A device for surfacing a metal alloy part by laser welding, the part including a recess to be surfaced and located at an overall planar area of the part, the device including a first protective element and a second protective element arranged on either side of the recess, the first protective element and the second protective element each having an irradiation surface which is to be at least partially covered with a layer of powder to enable welding by passing a laser beam over the layer of powder, the laser beam passing over the irradiation surface of the first protective element during welding and then the irradiation surface of the second protective element, the second protective element having a shape capable of containing a layer of powder having a height that is greater at the end, in the direction of propagation of the laser beam during welding, of the second protective element than at the start of the second protective element.