US 11,911,838 B2
Electron beam installation and method for working powdered material
Björn Hansen, Munich (DE); Gerhard Huber, Bodenkirchen (DE); and Thorsten Löwer, Munich (DE)
Assigned to pro-beam GmbH & Co. KGaA, (DE)
Appl. No. 16/492,826
Filed by pro-beam GmbH & Co. KGaA, Gilching (DE)
PCT Filed Feb. 26, 2018, PCT No. PCT/EP2018/054608
§ 371(c)(1), (2) Date Sep. 10, 2019,
PCT Pub. No. WO2018/162261, PCT Pub. Date Sep. 13, 2018.
Claims priority of application No. 10 2017 105 193.7 (DE), filed on Mar. 10, 2017.
Prior Publication US 2020/0147717 A1, May 14, 2020
Int. Cl. B23K 15/00 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); H01J 37/305 (2006.01); B22F 12/41 (2021.01); B22F 10/28 (2021.01); B22F 12/00 (2021.01); B22F 10/37 (2021.01)
CPC B23K 15/0086 (2013.01) [B22F 10/28 (2021.01); B22F 10/37 (2021.01); B22F 12/00 (2021.01); B22F 12/41 (2021.01); B23K 15/002 (2013.01); B23K 15/0026 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); H01J 37/305 (2013.01); B22F 2202/05 (2013.01); H01J 2237/3128 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electron beam installation, which is used for processing powdered material, comprising:
a powder container, which can accommodate a powder bed made of the powdered material to be processed;
an electron beam generator, which is configured to direct an electron beam onto laterally differing locations of the powder bed; and
a coherer device which is configured to apply an AC voltage between at least two electrodes to generate an electromagnetic alternating field, which bonds the powdered material of the powder bed, at least in regions over the powder bed, wherein the frequency of the AC voltage is greater than 5 kHz.