US 11,679,550 B2
Method of manufacturing modeled body, method of modeling solidified object, and modeled body
Daichi Yamaguchi, Kanagawa (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Filed by Daichi Yamaguchi, Kanagawa (JP)
Filed on Nov. 23, 2021, as Appl. No. 17/534,452.
Claims priority of application No. JP2020-197954 (JP), filed on Nov. 30, 2020.
Prior Publication US 2022/0168949 A1, Jun. 2, 2022
Int. Cl. B29C 64/153 (2017.01); B29C 64/165 (2017.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01)
CPC B29C 64/153 (2017.08) [B29C 64/165 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12)] 6 Claims
OG exemplary drawing
 
1. A method of manufacturing a modeled body comprising:
modeling including applying a modeling solution to each layer of powder laid in a layer, to solidify the powder to which the modeling solution is applied, to model a solidified object;
sintering the solidified object modeled at the modeling to obtain a sintered body of the solidified object; and
removing a sacrificial body from the sintered body, to obtain a modeled body in which the sacrificial body is removed from the sintered body,
wherein at the modeling, the modeling solution is applied to a modeled body area in the solidified object and a border area in the solidified object such that, after the modeling solution is applied, a density of the powder at the border area is smaller than a density of the powder in the modeled body area, the modeled body area corresponding to the modeled body, the border area corresponding to a border between the modeled body and the sacrificial body,
the powder is a material having fluidity lower than fluidity of aluminum powder, and
at the modeling, the modeling solution is applied such that an application amount of the modeling solution to a unit area of the border area is smaller than an application amount of the modeling solution to a unit area of the modeled body area.
 
6. A method of modeling a solidified object that is used for a method of manufacturing a modeled body including:
sintering a solidified object to obtain a sintered body; and
removing a sacrificial body from the sintered body, to obtain a solidified object in which the sacrificial body is removed from the sintered body,
the method of modeling a solidified object comprising:
applying a modeling solution to each layer of powder laid in a layer and solidifying the powder to which the modeling solution is applied, to model the solidified object,
wherein at the modeling the modeling solution is applied to a modeled body area in the solidified object and a border area in the solidified object such that, after the modeling solution is applied, a density of the powder in the border area is smaller than a density of the powder in the modeled body area, the modeled body area corresponding to the modeled body, the border area corresponding to a border between the modeled body and the sacrificial body,
the powder is a material having fluidity lower than fluidity of aluminum powder, and
at the modeling, the modeling solution is applied such that an application amount of the modeling solution to a unit area of the border area is smaller than an application amount of the modeling solution to a unit area of the modeled body area.