US 12,240,043 B2
Method and device for producing a multi-material workpiece
Toni Adam Krol, Luebeck (DE); Christopher Stengel, Luebeck (DE); and Dieter Schwarze, Luebeck (DE)
Assigned to Nikon SLM Solutions AG, Luebeck (DE)
Appl. No. 17/619,320
Filed by Nikon SLM Solutions AG, Luebeck (DE)
PCT Filed Jun. 16, 2020, PCT No. PCT/EP2020/066553
§ 371(c)(1), (2) Date Dec. 15, 2021,
PCT Pub. No. WO2020/254284, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 10 2019 116 503.2 (DE), filed on Jun. 18, 2019.
Prior Publication US 2022/0193771 A1, Jun. 23, 2022
Int. Cl. B22F 7/06 (2006.01); B22F 10/28 (2021.01); B22F 10/34 (2021.01); B22F 10/37 (2021.01); B22F 10/43 (2021.01); B22F 10/66 (2021.01); B22F 10/73 (2021.01); B22F 12/13 (2021.01); B22F 12/17 (2021.01); B22F 12/55 (2021.01); B22F 12/58 (2021.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/10 (2020.01); B33Y 40/20 (2020.01); B33Y 70/00 (2020.01); B22F 10/00 (2021.01)
CPC B22F 7/06 (2013.01) [B22F 10/28 (2021.01); B22F 10/34 (2021.01); B22F 10/37 (2021.01); B22F 10/43 (2021.01); B22F 10/66 (2021.01); B22F 10/73 (2021.01); B22F 12/13 (2021.01); B22F 12/17 (2021.01); B22F 12/55 (2021.01); B22F 12/58 (2021.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/10 (2020.01); B33Y 40/20 (2020.01); B33Y 70/00 (2014.12); B22F 10/00 (2021.01)] 10 Claims
OG exemplary drawing
 
1. Method for producing a three-dimensional workpiece with the steps:
(i) applying a first raw material powder to a substrate in order to produce a raw material powder layer consisting of the first raw material powder,
(ii) selectively irradiating the raw material powder layer consisting of the first raw material powder with electromagnetic radiation or particle radiation in order to produce a solidified first workpiece layer portion from the first raw material powder,
(iii) removing non-solidified first raw material powder from the substrate,
(iv) applying a second raw material powder to the substrate in order to produce a raw material powder layer portion consisting of the second raw material powder adjacent to the solidified first workpiece layer portion,
(v) selectively irradiating the raw material powder layer portion with electromagnetic radiation or particle radiation in order to produce a solidified second workpiece layer portion from the second raw material powder adjacent to the solidified first workpiece layer portion,
(vi) heating of non-solidified second raw material powder in order to produce a continuous porous sintered layer portion from the second raw material powder adjacent to the second workpiece layer portion,
the steps (i) to (vi) being repeated wherein each of the first raw material powder and the second raw material powder is always applied to a solid base, wherein the solid base initially comprises the substrate and after the repetition of steps (i) to (vi), the solid base comprises the continuous porous sintered layer portion, the solidified first workpiece layer portion and/or the solidified second work-piece layer portion.