US 12,409,512 B2
Determination and control of cooling rate in an additive manufacturing system
Lars Jacquemetton, Santa Fe, NM (US); Martin S. Piltch, Los Alamos, NM (US); and Darren Beckett, Corrales, NM (US)
Assigned to Divergent Technologies, Inc., Los Angeles, CA (US)
Filed by DIVERGENT TECHNOLOGIES, INC., Los Angeles, CA (US)
Filed on Jun. 16, 2021, as Appl. No. 17/349,747.
Claims priority of provisional application 63/041,026, filed on Jun. 18, 2020.
Prior Publication US 2021/0394302 A1, Dec. 23, 2021
Int. Cl. B23K 26/03 (2006.01); B22F 10/368 (2021.01); B22F 10/85 (2021.01); B22F 12/41 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B23K 26/06 (2014.01); B23K 26/082 (2014.01); B23K 26/342 (2014.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); G01J 5/10 (2006.01)
CPC B23K 26/034 (2013.01) [B22F 10/368 (2021.01); B22F 10/85 (2021.01); B22F 12/41 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B23K 26/0626 (2013.01); B23K 26/342 (2015.10); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B23K 26/082 (2015.10); G01J 5/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An additive manufacturing system comprising:
a power source configured to scan a beam of energy across first and second work regions of a build plane;
a sensor configured to sense a temperature of each of the first and second work regions; and
a processor coupled to the sensor and configured to control a first cooling rate of the first work region after the first work region is fused by the beam of energy and to control a second cooling rate of the second work region after the second work region is fused by the beam of energy by controlling a thermal energy density (TED) of each of the first and second work regions, wherein the TED is determined by dividing the sensed temperature of the respective work region by an area of the respective work region, and wherein the first cooling rate is greater than the second cooling rate.