US 11,865,615 B2
Techniques for depowdering additively fabricated parts and related systems and methods
Jamison Go, Orlando, FL (US); Emanuel M. Sachs, Newton, MA (US); Michael Goldblatt, Lincoln, MA (US); and Jeffrey von Loesecke, Hingham, MA (US)
Assigned to Desktop Metal, Inc., Burlington, MA (US)
Filed by Desktop Metal, Inc., Burlington, MA (US)
Filed on Dec. 10, 2020, as Appl. No. 17/117,200.
Claims priority of provisional application 62/946,570, filed on Dec. 11, 2019.
Prior Publication US 2021/0237159 A1, Aug. 5, 2021
Int. Cl. B22F 10/68 (2021.01); B33Y 40/20 (2020.01); B08B 7/04 (2006.01); B03C 1/30 (2006.01); B08B 5/02 (2006.01)
CPC B22F 10/68 (2021.01) [B03C 1/30 (2013.01); B08B 5/02 (2013.01); B08B 7/04 (2013.01); B33Y 40/20 (2020.01); B03C 2201/20 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for extracting one or more additively fabricated parts from a powder bed comprising a ferromagnetic powder and the one or more additively fabricated parts, the method comprising:
arranging the powder bed comprising the ferromagnetic powder and the one or more additively fabricated parts within an enclosure, the enclosure having one or more magnetic filters arranged within;
directing, using one or more nozzles, one or more jets of gas onto a surface of the powder bed within the enclosure to displace at least some of the ferromagnetic powder and thereby expose at least some of the one or more additively fabricated parts; and
capturing at least some of the displaced ferromagnetic powder on and/or within the one or more magnetic filters.