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21. 发明授权

US4474604A Method of producing high-grade metal or alloy powder 失效
标题翻译：生产高档金属或合金粉末的方法
公开(公告)号：US4474604A
公开(公告)日：1984-10-02
申请号：US490044
申请日：1983-04-29
申请人： Hideki Nakamura , Takashi Meguro , Noboru Hanai
发明人： Hideki Nakamura , Takashi Meguro , Noboru Hanai
IPC分类号： B22F9/10 , B22F9/14 , C25C5/00 , B01J2/02
CPC分类号： B22F9/10 , B22F9/14
摘要： A method of producing high-grade metal or alloy powder, improved to eliminate undesirable inclusions and to reduce the production cost. A solid electrode material made of a metal or alloy, having a composition substantially equal to the composition of aimed metal or alloy powder, is heated and molten in a vacuum chamber by application of a plasma, arc, electron beam or laser beam. The molten metal or alloy in the form of droplets fall into collision with the surface of a roll rotating at a high speed so as to be pulverized and partially solidified. The particles of the metal or alloy scattered by the roll is directed to one side of the roll and are spheroidized and solidified into fine particles before they are collected in a collecting box disposed at one side of the roll within the vacuum chamber.
摘要翻译：一种生产高级金属或合金粉末的方法，改进以消除不期望的夹杂物并降低生产成本。由金属或合金制成的固体电极材料，具有基本上等于目标金属或合金粉末的组成的组成，通过施加等离子体，电弧，电子束或激光束在真空室中加热和熔融。液滴形式的熔融金属或合金与高速旋转的辊的表面碰撞，从而被粉碎和部分固化。由辊散布的金属或合金的颗粒被引导到辊的一侧，并且在它们被收集在设置在真空室内的辊的一侧的收集箱中之前被球化并固化成细颗粒。

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