Abstract: An assembly of a device for three-dimensional printing by metal deposition comprising a conduit for guiding a metal wire and opening inside an enclosure under an inert atmosphere. The device has means for injecting an inert gas into the conduit of the head.

Abstract: The manufacturing method comprises the following steps: —extracting a sub-batch (18) from a batch (16) of powder, the batch having a ratio X0 of a predetermined component, —manufacturing parts (22) using powder-bed based additive manufacturing until all of the sub-batch is used up (18); then—performing the following cycle a number nmax of times: —recycling the powder and continuing manufacture until all of the recycled powder is used up; —determining a contact surface Sn between the powder and a material fused into the parts (22), n designating the cycle number, and a mass Mn of accumulated powder used since the start of the method, and—measuring a ratio Xnmax of a predetermined component in at least one of the parts (22) or a test piece (24) manufactured during the last cycle, then—determining a quantity R such that: Formula (I); —performing the following cycle at least once: —recycling the powder and continuing manufacture until all of the recycled powder has been used up at least once, then—determining the

Abstract: A method for manufacturing a metal component includes the following steps: a shell made of a titanium-based material is provided, the shell having a first surface and a second surface remote from the first surface; a covering layer made of a titanium fire-resistant material is produced by additive manufacturing on the shell such that the covering layer at least partially covers the first surface and/or the second surface; and, after the additive manufacturing step, the metal component is heat treated at a temperature of between 200° C. and 1000° C.

Abstract: Manufacturing of a part by local irradiation of a material that can be sintered, melted or photopolymerized, by: providing a volume of the material for manufacturing the part and compressing the volume by applying a pressure; defining, in the volume, a plurality of different target volumes, the combined target volumes defining the part to be manufactured; for each target volume, maintaining the pressure applied to the volume and simultaneously irradiating the target volume with at least two continuous beams that converge in the target volume; releasing the obtained part from the rest of non-irradiated material. The material is partially transparent to the beams; the energy applied to the target volume by each beam is greater than Ethreshold, the sum of the energies applied to the target volume by each of the beams is greater than or equal to Etransformation threshold.

Abstract: An assembly of a device for three-dimensional printing by metal deposition comprising a conduit for guiding a metal wire and opening inside an enclosure under an inert atmosphere. The device has means for injecting an inert gas into the conduit of the head.