Title:
POWDER MATERIAL, METHOD FOR MANUFACTURING POWDER MATERIAL, METHOD FOR MANUFACTURING SOLID MODEL, AND SOLID MODELING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2017/217302
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a powder material for the powder bed fusion method, the powder material enabling higher modeling speed and higher manufacturing precision of a solid model than conventional powder materials. The present invention relates to a powder material that is used to manufacture a solid model by selectively radiating a laser beam onto a thin layer of the powder material containing a plurality of composite particles, forming a model layer as a result of the plurality of composite particles being sintered or fused, and laminating the model layer. The composite particles contain metal base particles having a number average particle diameter of 20-60 μm inclusive and low-heat-conductivity particles that adhere in an insular form to the surfaces of the base particles and that have a number average particle diameter of 100-300 nm inclusive. The heat conductivity of the low-heat-conductivity particles at 100°C is 35.0 W/K·m or less, and the heat conductivity of the low-heat-conductivity particles at 100°C is lower than the heat conductivity of a metal material at 100°C contained as a main constituent of the metal base particles.
Inventors:
MATSUOKA MASAHIRO
YONEZAKI AYUMI
YONEZAKI AYUMI
Application Number:
PCT/JP2017/021165
Publication Date:
December 21, 2017
Filing Date:
June 07, 2017
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
B22F3/16; B22F1/052; B22F1/16; B22F3/105; B33Y10/00; B33Y30/00; B33Y70/00
Foreign References:
| JP2015131439A | 2015-07-23 | |||
| JP2011006770A | 2011-01-13 |
Attorney, Agent or Firm:
WASHIDA, Kimihito (JP)
Download PDF: