METHOD OF MANUFACTURING METAL POWDER - FUKUDA METAL FOIL POWDER

Title:

METHOD OF MANUFACTURING METAL POWDER

Document Type and Number:

WIPO Patent Application WO/2000/038865

Kind Code:

A1

Abstract:

A method of manufacturing metal powder for manufacturing metal powder by spraying coolant to a downwardly flowing molten metal flow, characterized by that the coolant is discharged toward the molten metal flow passed through an annular part continuously from an annular nozzle having a hole part to allow the molten metal flow to pass so that the coolant surrounds the molten metal flow in a one-sheet hyperboloid shape, and a pressure on the inside or on the lower inside of the constricted part of the hyperboloid of one-sheet is reduced by 50 to 750 mmHg below that on the upper end part inside of the hyperboloid of one-sheet, whereby metal powder, which is fine, pseudo-spherical, and narrower in particle size distribution, can be manufactured efficiently.

Inventors:

KIKUKAWA MASATO (JP)
MATSUNAGA SHIGEMASA (JP)
INABA TSUNETA (JP)
IWATSU OSAMU (JP)
TAKEDA TOHRU (JP)

Application Number:

PCT/JP1999/003338

Publication Date:

July 06, 2000

Filing Date:

June 23, 1999

Export Citation:

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Assignee:

FUKUDA METAL FOIL POWDER (JP)
KIKUKAWA MASATO (JP)
MATSUNAGA SHIGEMASA (JP)
INABA TSUNETA (JP)
IWATSU OSAMU (JP)
TAKEDA TOHRU (JP)

International Classes:

B22F9/08; (IPC1-7): B22F9/08

Foreign References:

JPH04276006A	1992-10-01
JPS6350404A	1988-03-03
JPH0813007A	1996-01-16

Other References: