公开(公告)号：US06336953B1

公开(公告)日：2002-01-08

申请号：US09509592

申请日：2000-03-30

申请人： Masato Kikukawa ,  Shigemasa Matsunaga ,  Tsuneta Inaba ,  Osamu Iwatsu ,  Tohru Takeda

发明人： Masato Kikukawa ,  Shigemasa Matsunaga ,  Tsuneta Inaba ,  Osamu Iwatsu ,  Tohru Takeda

IPC分类号： B22F908

CPC分类号： B22F9/082 ,  B22F2009/086 ,  B22F2009/088 ,  B22F2009/0884

摘要： The present invention relates to a method for preparing metal powder by means of blowing a cooling liquid toward a flowing down melt metal flow characterized that the cooling liquid is successively discharged downwardly from an annular nozzle toward the melt metal flow for surrounding it in the form of a hyperboloid of one sheet, wherein the annular nozzle is provided with a hole through which the melt metal flow may pass, and that the hyperboloid of one sheet has a pressure reduced by 50˜750 mmHg at the neighborhood of the constricted part inside the hyperboloid of one sheet. According to the present invention, there may be prepared fine and sherical metal powder which has a narrow range of a particle size distribution.

摘要翻译： 本发明涉及一种通过向向下流动的熔融金属流吹入冷却液来制备金属粉末的方法，其特征在于冷却液体从环形喷嘴向着熔融金属流向下排出，以便以 单层双曲面，其中环形喷嘴设置有熔体金属流可以通过的孔，并且一片的双曲面在双曲面内的收缩部分附近的压力降低了50〜750mmHg 的一张。 根据本发明，可以制备具有窄范围的粒度分布的精细和球形金属粉末。