US 12,110,576 B2
WC-based cemented carbide powder, WC-based cemented carbide member, and manufacturing method for WC-based cemented carbide member
Hiroshi Shiratori, Tokyo (JP); Kazuya Shinagawa, Tokyo (JP); Shuho Koseki, Tokyo (JP); Kousuke Kuwabara, Tokyo (JP); Yasuhiko Otsubo, Tokyo (JP); and Shinya Okamoto, Tokyo (JP)
Assigned to Proterial, Ltd., Tokyo (JP)
Appl. No. 17/636,602
Filed by Hitachi Metals, Ltd., Tokyo (JP)
PCT Filed Aug. 27, 2020, PCT No. PCT/JP2020/032389
§ 371(c)(1), (2) Date Feb. 18, 2022,
PCT Pub. No. WO2021/039912, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 2019-154352 (JP), filed on Aug. 27, 2019.
Prior Publication US 2022/0290276 A1, Sep. 15, 2022
Int. Cl. C22C 32/00 (2006.01); B22F 1/00 (2022.01); B22F 10/64 (2021.01); B33Y 40/20 (2020.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); C22C 29/08 (2006.01)
CPC C22C 32/0052 (2013.01) [B22F 1/00 (2013.01); B22F 10/64 (2021.01); B33Y 40/20 (2020.01); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C22C 29/08 (2013.01); B22F 2201/10 (2013.01); B22F 2302/10 (2013.01); Y10T 428/12014 (2015.01)] 13 Claims
OG exemplary drawing
 
1. A WC-based cemented carbide powder for additive manufacturing method consisting of:
WC, Cu, and at least one of Co, Fe, and Cr,
wherein a content of the WC in mass ratio is equal to or more than 40 mass %,
a content of the at least one of Co, Fe, and Cr is equal to or more than 30 mass % and less than 60 mass %, and
a ratio a/b of a content ‘a’ of the Cu and the content ‘b’ of the at least one of Co, Fe, and Cr satisfies 0.070≤a/b≤1.000.