公开(公告)号：US20200254517A1

公开(公告)日：2020-08-13

申请号：US16641963

申请日：2017-08-25

Applicant: FUKUDA METAL FOIL & POWDER CO., LTD. ,  TECHNOLOGY RESEARCH ASSOCIATION FOR FUTURE ADDITIVE MANUFACTURING

Inventor： Seiichi MATSUMOTO ,  Yuji SUGITANI ,  Motonori NISHIDA

IPC: B22F1/00 ,  G01N3/24 ,  C22C1/04

Abstract: This invention relates to a method of evaluating a squeegeeing property of powder for lamination shaping by stable criteria. In this method, the squeegeeing property is evaluated using at least a satellite adhesion ratio of the powder and an apparent density of the powder. The satellite adhesion ratio is the ratio of the number of particles on which satellites are adhered to the number of all particles. If the satellite adhesion ratio is equal to or less than 50%, and the apparent density is equal to or more than 3.5 g/cm3, the squeegeeing property is evaluated as that the powder can be spread into a uniform powder layer in the lamination shaping. Furthermore, if the 50% particle size of a powder obtained by a laser diffraction method is 3 to 250 μm, the squeegeeing property is evaluated as that the powder can be spread into a uniform powder layer in the lamination shaping.

公开(公告)号：US20180333775A1

公开(公告)日：2018-11-22

申请号：US15545995

申请日：2016-12-26

Applicant: Technology Research Association For Future Additive Manufacturing

Inventor： Motonori NISHIDA ,  Yuji SUGITANI ,  Akihiko CHIBA ,  Youhei DAINO

IPC: B22F1/02 ,  B22F1/00 ,  B33Y70/00

CPC classification number: B22F1/025 ,  B22F1/00 ,  B22F1/0011 ,  B22F1/02 ,  B22F3/105 ,  B22F3/1055 ,  B22F3/16 ,  B22F2301/15 ,  B22F2304/10 ,  B33Y70/00

Abstract: The present invention relates to a metal powder which shortens a lamination-shaping time and facilitates the removal of an unnecessary powder after lamination-shaping by decreasing a pre-sintering temperature by using a processed metal powder. This metal powder for lamination-shaping is obtained by coating the surface of a powder of a nickel-based alloy with a conductive material. When the powder is the powder of the nickel-based alloy containing nickel as a main component and chromium and iron as primary subcomponents, the powder is coated, e.g., plated with nickel as the conductive material. The particle diameter range of the powder of the nickel-based alloy is 10 to 200 μm, preferably 25 to 150 μm, and more preferably 45 to 105 μm. The thickness range of the conductive material is 0.1 to 1 μm, and preferably 0.3 μm or more.