Powder material for use in additive layer manufacturing, additive layer manufacturing method using same, and molded article

Patent metadata

Field	Value
Publication number	US-12208446-B2
Application number	US-201917292806-A
Country	US
Kind code	B2
Filing date	Nov 8, 2019
Priority date	Nov 12, 2018
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

There is provided a powder material that is for densifying a molded article manufactured by an additive layer manufacturing method and improving harness of the molded article. There is provided a powder material for use in additive layer manufacturing containing ceramics and metals, in which a tapped filling rate defined by (tapped density/theoretical density)×100% is 40% or more.

First claim

The invention claimed is:

1. A powder material for use in additive layer manufacturing comprising:
ceramics; and
metals, wherein:
a tapped filling rate defined by (tapped density/theoretical density)×100% is 44.7% or more;
the powder material comprises a main powder and an additional powder, wherein the main powder and the additional powder are cermet or cemented carbide;
the main powder has a particle size range of 5 to 150 μm and the additional powder has a particle size range of 0.1 to 15 μm; and
a porosity of the main powder is 5% or less.

2. The powder material according to claim 1 , wherein a porosity of the main powder is larger than a porosity of the additional powder.

3. The powder material according to claim 1 , wherein
when a particle diameter at an integrated value of 50% (Dv50) in a volume-based particle size distribution of the main powder is defined as A and a particle diameter at an integrated value of 50% (Dv50) in a volume-based particle size distribution of the additional powder is defined as B, A/B is 25 or less.

4. The powder material according to claim 1 , wherein the powder material is used for manufacturing a cermet or a cemented carbide by the additive layer manufacturing.

5. The powder material according to claim 1 , wherein the main powder and the additional powder are cermet powders comprising WC and Co.

Assignees

• Fujimi Inc

Inventors

• Yamada Junya
• Ibe Hiroyuki
• Kato Nobuaki
• Kato Yuta
• Sugiyama Yoshikazu

Classifications

• B22F1/12 Primary

  Metallic powder containing non-metallic particles (containing lubricating or binding agents or organic material B22F1/10) · CPC title

• B22F1/05 Primary

  Metallic powder characterised by the size or surface area of the particles · CPC title

• Y10T428/12014

  having metal particles · CPC title

• B22F1/052

  characterised by a mixture of particles of different sizes or by the particle size distribution · CPC title

• B22F1/148

  Agglomerating · CPC title