公开(公告)号：US10174183B2

公开(公告)日：2019-01-08

申请号：US14908510

申请日：2015-03-09

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Yasuhiro Nagai ,  Kosuke Takeshita ,  Yoshikazu Ooba ,  Satoshi Imamura ,  Toshimitsu Okane

IPC: B22C1/22 ,  B22C9/02 ,  B22C9/12 ,  C08K9/04 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29B15/10 ,  B29C33/38 ,  C03C1/02 ,  C03C8/02 ,  C03C8/14 ,  C09D161/06 ,  C09D171/14 ,  B29K105/16 ,  B29K509/00

Abstract: In order to well perform recoating regardless of the type of granular material and reuse a refractory aggregate in an unprinted portion without any regeneration process in the manufacture of a three-dimensional lamination-shaped mold, this invention provides a granular material for use in shaping a three-dimensional laminated mold, which is coated with an acid as a catalyst which activates and cures an organic binder for binding the granular material. The acid contains at least one of sulfuric acid, phosphoric acid, a sulfonic acid and a carboxylic acid, and is one of a mixture of sulfuric acid and another acid, phosphoric acid only, a mixture of phosphoric acid and another acid, sulfonic acid only, a mixture of sulfonic acid and another acid and a mixture of a carboxylic acid and another acid.