US 12,343,813 B2
Additive manufacturing method for a metal part
Hugo Sistach, Moissy-Cramayel (FR); Cédric Pierre Jacques Colas, Moissy-Cramayel (FR); Terence Grall, Moissy-Cramayel (FR); Romaric Jean-Marie Piette, Moissy-Cramayel (FR); and James Prodent, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/611,809
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed May 15, 2020, PCT No. PCT/FR2020/050812
§ 371(c)(1), (2) Date Nov. 16, 2021,
PCT Pub. No. WO2020/229784, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 1905161 (FR), filed on May 16, 2019.
Prior Publication US 2022/0234107 A1, Jul. 28, 2022
Int. Cl. B23K 26/144 (2014.01); B22F 10/22 (2021.01); B22F 10/25 (2021.01); B22F 10/28 (2021.01); B22F 10/36 (2021.01); B23K 26/06 (2014.01); B23K 26/342 (2014.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01); B22F 12/45 (2021.01); B23K 101/00 (2006.01); B23K 103/04 (2006.01); B33Y 70/00 (2020.01); F01D 25/24 (2006.01)
CPC B23K 26/144 (2015.10) [B22F 10/22 (2021.01); B22F 10/25 (2021.01); B22F 10/28 (2021.01); B22F 10/36 (2021.01); B23K 26/0608 (2013.01); B23K 26/342 (2015.10); B33Y 10/00 (2014.12); B33Y 80/00 (2014.12); B22F 12/45 (2021.01); B23K 2101/001 (2018.08); B23K 2103/04 (2018.08); B33Y 70/00 (2014.12); F01D 25/24 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for additive manufacturing by depositing material on a part forming a substrate, the said part forming a substrate being made of a metal alloy, the method comprising the steps of:
forming a base layer by low-energy deposition, corresponding to a surface energy of less than 400 J/mm2, on a predefined surface to be deposited, and
depositing a wire on the base layer by high-energy deposition, corresponding to a surface energy greater than 500 J/mm2, thereby forming one or more additional layers,
the base layer providing a shielding effect that mitigates the thermal impact of the step of the depositing a wire on the base layer by high-energy deposition on the substrate part.