PRODUCTION METHOD FOR WATER-ATOMIZED METAL POWDER

A method for producing fine water-atomized metal powder that has a high iron-group component content, a high amorphous proportion, a high apparent density, and a high circularity is provided.A method for producing water-atomized metal powder by dividing a molten metal stream, which is falling in a v...

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Bibliographische Detailangaben
Hauptverfasser:	NAKASEKO, Makoto, UNAMI, Shigeru, TAKASHITA, Takuya, YAMAMOTO, Naoki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CASTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A method for producing fine water-atomized metal powder that has a high iron-group component content, a high amorphous proportion, a high apparent density, and a high circularity is provided.A method for producing water-atomized metal powder by dividing a molten metal stream, which is falling in a vertical direction, by spraying cooling water that impinges on the molten metal stream includes a step of spraying the cooling water at a spray pressure of 10 MPa or more and a spread angle in a range of 5° to 30° from each of three or more cooling water discharge ports arranged remote from the falling molten metal stream. The droplet diameter of the cooling water: 100 um or less, the convergence angle: 5° to 10°, and the water/molten steel ratio: 50 or more.