US 11,885,000 B2
In situ thermal treatment for PBF systems
Prabir Kanti Chaudhury, Los Angeles, CA (US)
Assigned to DIVERGENT TECHNOLOGIES, INC., Los Angeles, CA (US)
Filed by DIVERGENT TECHNOLOGIES, INC., Los Angeles, CA (US)
Filed on Dec. 19, 2019, as Appl. No. 16/721,797.
Claims priority of provisional application 62/784,282, filed on Dec. 21, 2018.
Prior Publication US 2020/0199723 A1, Jun. 25, 2020
Int. Cl. C21D 11/00 (2006.01); B22F 12/10 (2021.01); B22F 12/70 (2021.01); B22F 12/30 (2021.01); C22F 1/04 (2006.01); B23K 26/342 (2014.01); B22F 10/28 (2021.01); B22F 12/90 (2021.01); B22F 10/322 (2021.01); B22F 10/64 (2021.01); B22F 12/49 (2021.01); B22F 12/52 (2021.01)
CPC C22F 1/04 (2013.01) [B22F 10/28 (2021.01); B22F 10/322 (2021.01); B22F 10/64 (2021.01); B22F 12/10 (2021.01); B22F 12/70 (2021.01); B22F 12/90 (2021.01); B23K 26/342 (2015.10); C21D 11/00 (2013.01); B22F 12/30 (2021.01); B22F 12/49 (2021.01); B22F 12/52 (2021.01)] 23 Claims
OG exemplary drawing
 
1. A powder bed fusion (PBF)-based three-dimensional (3-D) printer, comprising:
a depositor configured to deposit layers of print material in a chamber of the 3-D printer forming a print bed; and
a gas source for delivering a gas,
wherein the gas is delivered to at least one port of the 3-D printer, the port positioned below at least one layer of the layers of the print material of the print bed and configured to deliver the gas to the print material below the at least one layer, to conduct thermal treatment on a build piece in the print bed.