Electron beam installation and method for working powdered material
AssigneePro-Beam AG & Co. KGAA
InventorsBjörn Hansen, Gerhard Huber, Thorsten Löwer
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Abstract
An electron beam installation, which is used for processing powdered material, has a powder container, which can accommodate a powder bed made of the powdered material to be processed. Furthermore, it has an electron beam generator, which is configured to direct an electron beam onto laterally differing locations of the powder bed. To reduce the dispersion of the powdered material during the processing using the electron beam, the electron beam installation has a frit device, which, by applying an AC voltage between at least two electrodes, generates an electromagnetic alternating field, which bonds the powdered material of the powder bed, at least in regions over the powder bed.
Claims12
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.
An electron beam installation, which is used for selective melting of powdered material to form a 3D structure, comprising:
- a powder container, which can accommodate a powder bed made of the powdered material to be selectively fused;
- an electron beam generator, which is configured to direct an electron beam onto laterally differing locations of the powder bed to selectively fuse the powdered material;
- 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, before the selective fusion with the electron beam generator, wherein the frequencies at which the AC voltage of the coherer device is operated are greater than 5 kHz.
Dependencies are inferred from the claim text.