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

Provided is a powder that has improved flowability even when the powder contains a powder having low sphericity. This is achieved by the following means. A powder for additive manufacturing for use in producing a multi-layer shaped object by repeatedly forming a solidified layer by melting a powder...

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Bibliographische Detailangaben
Hauptverfasser:	FUJIEDA Tadashi, AOTA Kinya, KATO Takahiko, KUWABARA Kousuke, YAMAGA Kenji, TAKAHASHI Isamu, SATAKE Hiroyuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ALLOYS CASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Provided is a powder that has improved flowability even when the powder contains a powder having low sphericity. This is achieved by the following means. A powder for additive manufacturing for use in producing a multi-layer shaped object by repeatedly forming a solidified layer by melting a powder spread in a layer by beam irradiation, comprising: a first metal powder having an average diameter of 10 µm or more but 200 µm or less; and a second powder whose sphericity is higher than that of the first metal powder and whose average diameter is 1/10 or less of that of the first metal powder, wherein a volume fraction of the first metal powder is 99% or more and a volume fraction of the second powder is less than 1%.