Title:
POWDER FOR METAL ADDITIVE MANUFACTURING, METHOD FOR PRODUCING SAME, ADDITIVE MANUFACTURING DEVICE, AND CONTROL PROGRAM THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/059183
Kind Code:
A1
Abstract:
The present invention provides a powder for metal additive manufacturing that does not cause smoke to be emitted even when a preheating temperature is lowered by simple mechanical processing. In the powder for metal additive manufacturing, a solidified structure including a dendrite structure on the surface of a metal powder is flattened. Flattening of the solidified structure including the dendrite structure is achieved by mechanical processing including collision processing of the metal powder. The metal powder is heated to 100-300°C when performing the mechanical processing. The powder for metal additive manufacturing is a metal powder in which the capacitive component of impedance measured after heating to a predetermined temperature is zero. The metal powder is a powder of a metal alloy produced by an atomizing method or a plasma rotating electrode method. The metal alloy includes a nickel-based alloy, a cobalt-chrome alloy, an iron-based alloy, an aluminum alloy, and a titanium alloy.
Inventors:
CHIBA AKIHIKO (JP)
KUDO TAKAHIRO (JP)
DAINO YOUHEI (JP)
AOYAGI KENTA (JP)
KUDO TAKAHIRO (JP)
DAINO YOUHEI (JP)
AOYAGI KENTA (JP)
Application Number:
PCT/JP2019/010679
Publication Date:
March 26, 2020
Filing Date:
March 14, 2019
Export Citation:
Assignee:
TECH RES ASSOCIATION FUTURE ADDITIVE MANUFACTURING (JP)
International Classes:
B22F1/065; B22F1/14; B22F1/142; B22F3/105; B22F3/16; B33Y70/00
Domestic Patent References:
| WO2017006610A1 | 2017-01-12 |
Foreign References:
| JP2015059236A | 2015-03-30 | |||
| JPH07331301A | 1995-12-19 | |||
| JP2018034700W | 2018-09-19 | |||
| JP2016023367A | 2016-02-08 |
Other References:
CHIBA, AKIHIRO ET AL.: "Research on Preheating Temperature Control Technologies for Simultaneously Removing Residual Stress and ''Smoke", ELECTRON BEAM LAMINATED MANUFACTURING. COLLECTED ABSTRACTS OF MEETING OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, no. 298, 5 September 2018 (2018-09-05)
See also references of EP 3854501A4
See also references of EP 3854501A4
Attorney, Agent or Firm:
KATO Takashi et al. (JP)
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