POWDER FOR LAYER-BY-LAYER ADDITIVE MANUFACTURING, AND PROCESS FOR PRODUCING OBJECT BY LAYER-BY-LAYER ADDITIVE MANUFACTURING

Title:

POWDER FOR LAYER-BY-LAYER ADDITIVE MANUFACTURING, AND PROCESS FOR PRODUCING OBJECT BY LAYER-BY-LAYER ADDITIVE MANUFACTURING

Document Type and Number:

WIPO Patent Application WO/2016/031279

Kind Code:

A1

Abstract:

The present invention improves the flowability of a powder including a powder having a low degree of sphericity. Provided is a powder for use in producing an object by layer-by-layer additive manufacturing by repeating the steps of spreading a powder in a layer, irradiating the layer with a beam to melt the powder, and forming a solidified layer, said powder being characterized by comprising 99 vol% or more first metal powder that has an average diameter of 10-200 μm and less than 1 vol% second powder that has a higher degree of sphericity than the first metal powder and has an average diameter not larger than 1/10 the average diameter of the first metal powder.

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Inventors:

KUWABARA KOUSUKE (JP)
KATO TAKAHIKO (JP)
YAMAGA KENJI (JP)
AOTA KINYA (JP)
TAKAHASHI ISAMU (JP)
FUJIEDA TADASHI (JP)
SATAKE HIROYUKI (JP)

Application Number:

PCT/JP2015/057972

Publication Date:

March 03, 2016

Filing Date:

March 18, 2015

Export Citation:

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Assignee:

HITACHI LTD (JP)

International Classes:

B22F3/105; B22F1/052; B22F3/16; B29C67/00

Foreign References:

JP2010202928A	2010-09-16
JP2011184708A	2011-09-22

Other References: