公开(公告)号：US20180112067A1

公开(公告)日：2018-04-26

申请号：US15124335

申请日：2016-04-20

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Yasuhiro NAGAI ,  Kosuke TAKESHITA ,  Toshimitsu OKANE

IPC: C08K9/04 ,  C08K3/36 ,  C08K9/02 ,  B22C1/10 ,  B33Y70/00 ,  B22C9/02 ,  B33Y10/00

CPC classification number: C08K9/04 ,  B22C1/10 ,  B22C1/224 ,  B22C1/2253 ,  B22C9/02 ,  B22C9/12 ,  B28B1/001 ,  B29C64/165 ,  B32B18/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C04B20/107 ,  C04B26/105 ,  C04B26/12 ,  C04B28/00 ,  C04B35/14 ,  C04B35/6266 ,  C04B35/62802 ,  C04B35/62886 ,  C04B35/632 ,  C04B35/63448 ,  C04B35/63472 ,  C04B35/63476 ,  C04B35/63484 ,  C04B35/653 ,  C04B2103/0012 ,  C04B2111/00431 ,  C04B2111/00612 ,  C04B2235/448 ,  C04B2235/449 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/6025 ,  C04B2235/6026 ,  C08K3/36 ,  C08K9/02 ,  C08K2201/005 ,  Y02P10/292 ,  C04B14/06

Abstract: The present invention is a granular material that can be well recoated regardless of the type of the granular material, and enables a refractory aggregate in an unprinted portion to be used without any regeneration process, in the manufacture of a three-dimensional laminated and shaped mold. This granular material is a granular material for use in three-dimensional laminated mold shaping, and obtained by adding a material that causes a hydration reaction having a moisture absorbing function and generates a catalytic effect to a coating material mixed with or coated with an acid as a catalyst which activates and hardens an organic binder for binding the granular material.

公开(公告)号：US20180065172A1

公开(公告)日：2018-03-08

申请号：US15119340

申请日：2016-02-15

Applicant: TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Yasuhiro NAGAI ,  Yuuki HATORI ,  Yoshikazu OOBA ,  Toshimitsu OKANE

IPC: B22C9/10 ,  B22C9/12 ,  B22C9/02 ,  B22C1/18

CPC classification number: B22C9/10 ,  B22C1/18 ,  B22C9/02 ,  B22C9/12 ,  B28B1/001 ,  B28B7/346 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  Y02P10/292

Abstract: Provided is a granular material which generates no harmful gas at the time of pouring, reduces a gas defect as one of casting defects, and is readily reusable after pouring, in the manufacture of a three-dimensional laminated and shaped mold. This granular material is a granular material for use in a three-dimensional laminated and shaped mold manufacturing apparatus, and includes magnesium sulfate. The amount of magnesium sulfate included in the granular material is 1 to 10 pts·mass with respect to 100 pts·mass of the granular material. The amount of water included in the granular material is 0.1 mass % or less except for crystallization water of magnesium sulfate.