US 12,138,685 B2
Controlling green body object deformation
John Samuel Dilip Jangam, Palo Alto, CA (US); Thomas Anthony, Palo Alto, CA (US); and Lihua Zhao, Palo Alto, CA (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 17/052,597
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Mar. 18, 2019, PCT No. PCT/US2019/022710
§ 371(c)(1), (2) Date Nov. 3, 2020,
PCT Pub. No. WO2020/190274, PCT Pub. Date Sep. 24, 2020.
Prior Publication US 2021/0402467 A1, Dec. 30, 2021
Int. Cl. B22F 1/00 (2022.01); B22F 1/10 (2022.01); B22F 1/103 (2022.01); B22F 1/107 (2022.01); B22F 10/14 (2021.01); B33Y 10/00 (2015.01); B33Y 50/02 (2015.01); B33Y 70/10 (2020.01)
CPC B22F 10/14 (2021.01) [B22F 1/09 (2022.01); B22F 1/10 (2022.01); B22F 1/103 (2022.01); B22F 1/107 (2022.01); B33Y 10/00 (2014.12); B33Y 50/02 (2014.12); B33Y 70/10 (2020.01); B22F 2304/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A three-dimensional printing kit, comprising:
a particulate build material comprising from about 80 wt % to 100 wt % metal build particles having a D50 particle size distribution value ranging from about 50 μm to about 150 μm;
a binding agent contained separately from the particulate build material and including a build binder to apply to particulate build material layers to form a green body object; and
a shaping composition to apply to a surface of the green body object to ameliorate deformation within an intermediate temperature range where the build binder is not effective at retaining the green body object shape prior to the metal build particles becoming heat-fused, the shaping composition including:
a water-based liquid vehicle present at from 20 wt % to about 30 wt %, based on a total weight of the shape composition;
from about 65 wt % to about 75 wt %, based on the total weight of the shaping composition, of a metal particulate mixture including aluminum-containing particulates and iron-containing particulates independently having a D50 particle size ranging from about 5 μm to about 100 μm; and
from about 5 wt % to about 15 wt % of a shaping binder;
wherein a viscosity of the shaping composition ranges from about 50 cps to about 5000 cps.