| 摘要 |
PURPOSE:To provide the titled apparatus which permits easy production of high-purity powder by providing a plasma gun which melts the end of a hung and held melting material to form liquid drops and a rotary disk for splashing and cooling the falling liquid drops, etc., into a chamber in which a cooling gas is filled. CONSTITUTION:The end of the hung and held melting material 11 is melted by an arc jet 16 of the plasma gun 12 and the liquid drops 13 of the molten metal formed in such a manner are dropped onto the disk 4. The disk 14 is kept rotating at a high speed, for example, 30,000rpm by a rotating device 15 during this time. The falling liquid drops 13 are, therefore, splashed and are quickly cooled by the cooling gas 17 filled in the chamber 19, by which powder 18 is formed. Since the plasma gun is used for melting of the melting material with the apparatus for producing the metal powder of this invention, the high-pressure atmosphere of the cooling gas can be formed in the chamber. An increase in the size of the melting material is thereby permitted and the productivity is improved. In addition, the high-purity powder is produced by installing the chamber to a required size.
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