US 11,752,547 B2
Solidification refinement and general phase transformation control through application of in situ gas jet impingement in metal additive manufacturing
Martin Borlaug Mathisen, Hønefoss (NO); and Hilde Løken Larsen, Oslo (NO)
Assigned to Norsk Titanium AS, Honefoss (NO)
Filed by NORSK TITANIUM AS, Hønefoss (NO)
Filed on Jun. 29, 2018, as Appl. No. 16/24,275.
Application 16/024,275 is a continuation in part of application No. 16/019,460, filed on Jun. 26, 2018, abandoned.
Claims priority of provisional application 62/527,656, filed on Jun. 30, 2017.
Prior Publication US 2019/0001437 A1, Jan. 3, 2019
Int. Cl. B22D 23/00 (2006.01); B23K 26/14 (2014.01); B23K 26/342 (2014.01); B23K 37/06 (2006.01); B23K 10/02 (2006.01); B22F 3/10 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B23K 26/00 (2014.01); B23K 26/60 (2014.01); B23K 26/348 (2014.01); B33Y 50/02 (2015.01); B23K 103/14 (2006.01)
CPC B22D 23/003 (2013.01) [B22F 3/1028 (2013.01); B23K 10/027 (2013.01); B23K 26/0006 (2013.01); B23K 26/147 (2013.01); B23K 26/1438 (2015.10); B23K 26/1464 (2013.01); B23K 26/342 (2015.10); B23K 26/348 (2015.10); B23K 26/60 (2015.10); B23K 37/06 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B22F 2301/205 (2013.01); B22F 2998/10 (2013.01); B23K 2103/14 (2018.08)] 2 Claims
OG exemplary drawing
 
1. A jet device, comprising:
a first conduit comprising:
a first inlet for accepting a cooling gas; and
a first aperture connected to a first nozzle for dispensing the cooling gas; and
a second conduit comprising:
a second inlet for accepting the cooling gas; and
a second aperture connected to a second nozzle for dispensing the cooling gas;
wherein:
the first conduit is attached to a melting tool on a first side of a thermal energy source produced by the melting tool and the second conduit is attached to the melting tool on an opposite, second side of the thermal energy source;
at least one of the first nozzle or second nozzle is configured to produce a turbulent flow of the cooling gas as the cooling gas is dispensed during material deposition;
the first nozzle and second nozzle are configured to direct the cooling gas to impinge on one or more of a molten pool and a liquid-solid boundary of the molten pool; and
the first nozzle and second nozzle are positioned to prevent blowing the cooling gas toward the thermal energy source.