POWDER FOR METAL ADDITIVE MANUFACTURING, MANUFACTURING METHOD THEREFOR, ADDITIVE MANUFACTURING DEVICE, AND CONTROL PROGRAM THEREFOR - TECH RES ASSOCIATION FUTURE ADDITIVE MANUFACTURING

Title:

POWDER FOR METAL ADDITIVE MANUFACTURING, MANUFACTURING METHOD THEREFOR, ADDITIVE MANUFACTURING DEVICE, AND CONTROL PROGRAM THEREFOR

Document Type and Number:

WIPO Patent Application WO/2020/059059

Kind Code:

A1

Abstract:

The present invention provides a powder for metal additive manufacturing, wherein due to simple mechanical processing, smoking does not occur even when a preheating temperature is lowered. In this powder for metal additive manufacturing, a solidification structure including a dendrand structure of a surface of a metal powder is flattened. The flattening of the solidification structure including the dendrand structure is achieved via mechanical processing that includes collision processing of the metal powder. The mechanical processing is performed with the metal powder heated to 100°C-300°C. The powder for metal additive manufacturing is a metal powder wherein the capacitance component of the impedance as measured with the metal powder heated to a prescribed temperature is zero. This metal powder is a powder of a metal alloy that is produced according to an atomization method or a plasma rotating electrode method. This metal alloy includes a nickel-based alloy, a cobalt-chromium alloy, an iron-based alloy, an aluminum alloy, or a titanium alloy.

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Inventors:

CHIBA AKIHIKO (JP)
KUDO TAKAHIRO (JP)
DAINO YOUHEI (JP)
AOYAGI KENTA (JP)

Application Number:

PCT/JP2018/034700

Publication Date:

March 26, 2020

Filing Date:

September 19, 2018

Export Citation:

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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

Other References:

CHIBA, AKIHIRO ET AL.: "In Search of Preheating Temperature Control Technologies for Simultaneously Removing Residual Stress and ''Smoke'' in Electron Beam Laminate Molding", COLLECTED ABSTRACTS OF MEETING OF THE JAPAN INSTITUTE OF METALS, vol. 163, 5 September 2018 (2018-09-05), pages 298, XP009526814

Attorney, Agent or Firm:

KATO Takashi et al. (JP)

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