HIGH-SPEED FABRICATION OF HIGHLY UNIFORM METALLIC MICRO SPHERES
    3.
    发明公开
    HIGH-SPEED FABRICATION OF HIGHLY UNIFORM METALLIC MICRO SPHERES 审中-公开
    高度均匀金属微球的高速制造

    公开(公告)号:EP1289701A2

    公开(公告)日:2003-03-12

    申请号:EP01937625.0

    申请日:2001-05-21

    IPC分类号: B22F9/08 B06B1/20

    摘要: In a high-speed fabrication process for producing highly uniform metallic microspheres, a molten metal (16) is passed through a small orifice (30), producing a stream of molten metal therefrom. A series of molten metal droplets forms from the break up of the capillary stream (32). To achieve high uniformity of the spheres and avoid defects, the droplets are cooled before being captured. Separating the droplets, by causing them to travel in different paths than their adjacent droplets, helps to facilitate the cooling of the droplets. The droplets can be separated by electrostatically charging them as they break off from the capillary stream. The droplets are then passed through an electric field, which can be produced by a pair of deflection plates (44). The droplets are dispersed by varying the electric field - e.g., by rotating the plates or by varying the voltage applied thereto - or by varying the charge of the droplets. Advantageously, the droplets can be actively cooled in flight by passing them through a cryogenic gas chamber.

    摘要翻译: 在用于生产高度均匀的金属微球体的高速制造过程中,使熔融金属(16)通过小孔(30),由此产生熔融金属流。 从毛细管流(32)的分解形成一系列熔融金属液滴。 为了实现球的高度均匀性并避免缺陷,液滴在被捕获之前被冷却。 通过使液滴在与其相邻的液滴不同的路径上行进来分离液滴有助于促进液滴的冷却。 当液滴从毛细管流中分离时,液滴可以通过静电充电来分离。 然后使液滴通过电场,该电场可以由一对偏转板(44)产生。 通过改变电场来分散液滴 - 例如通过旋转板或通过改变施加于其上的电压 - 或通过改变液滴的电荷来分散液滴。 有利的是,通过使液滴通过低温气体室,可以在飞行中主动冷却液滴。

    Vorrichtung zur Herstellung von Pulvermetall

    公开(公告)号:EP1356882A1

    公开(公告)日:2003-10-29

    申请号:EP02450075.3

    申请日:2002-04-04

    IPC分类号: B22F9/08

    摘要: Die Erfindung betrifft eine Vorrichtung zur Herstellung von Pulvermetall mit einem geheizten Tiegel (1), einem in seinem Bodenbereich (8) vorgesehenen Mundstück (5) mit einer verschließbaren Schmelzedüsc zur Ausbildung eines Schmelzestrahles (17), einer Inertgasversorgung für den Tiegel (1) und mit Inertgasdüsen (14) zum Zuführen von Inertgas zum Schmelzestrahl, um diesen zu zerstäuben
    Die Erfindung ist dadurch gekennzeichnet, dass der Tiegel (1) im Bereich des Mundstükkes (5) durch Gasbrenner (12) erwärmt wird.
    Die Erfindung betrifft auch Ausgestaltungen der Vorrichtung und ein Verfahren zur Herstellung von Pulvermetall.

    摘要翻译: 用于制造金属粉末的装置包括加热的坩埚(1),基部区域(8)中的接口(5),具有用于形成熔融射流的熔化喷嘴(17),用于坩埚的惰性气体供应和惰性气体 用于将惰性气体引入熔融射流并将其雾化的气体喷嘴(14)。 坩埚通过加热器,优选气体燃烧器(12)在接口管的区域中被加热。 还包括使用上述装置制造金属粉末的独立权利要求。

    HIGH-SPEED FABRICATION OF HIGHLY UNIFORM METALLIC MICRO SPHERES
    10.
    发明公开
    HIGH-SPEED FABRICATION OF HIGHLY UNIFORM METALLIC MICRO SPHERES 审中-公开
    SCHNELLE HERSTELLUNG VON SEHR GLEICHFVRMIGEN METALLISCHEN MIKROSPHDREN

    公开(公告)号:EP1289701A4

    公开(公告)日:2006-02-08

    申请号:EP01937625

    申请日:2001-05-21

    申请人: UNIV CALIFORNIA

    IPC分类号: B22F9/08 H05K3/34

    摘要: In a high-speed fabrication process for producing highly uniform metallic microspheres, a molten metal (16) is passed through a small orifice (30), producing a stream of molten metal therefrom. A series of molten metal droplets forms from the break up of the capillary stream (32). To achieve high uniformity of the spheres and avoid defects, the droplets are cooled before being captured. Separating the droplets, by causing them to travel in different paths than their adjacent droplets, helps to facilitate the cooling of the droplets. The droplets can be separated by electrostatically charging them as they break off from the capillary stream. The droplets are then passed through an electric field, which can be produced by a pair of deflection plates (44). The droplets are dispersed by varying the electric field - e.g., by rotating the plates or by varying the voltage applied thereto - or by varying the charge of the droplets. Advantageously, the droplets can be actively cooled in flight by passing them through a cryogenic gas chamber.

    摘要翻译: 在用于生产高度均匀的金属微球体的高速制造过程中,使熔融金属(16)通过小孔(30),由此产生熔融金属流。 从毛细管流(32)的分解形成一系列熔融金属液滴。 为了实现球的高度均匀性并避免缺陷,液滴在被捕获之前被冷却。 通过使液滴在与其相邻的液滴不同的路径上行进来分离液滴有助于促进液滴的冷却。 当液滴从毛细管流中分离时,液滴可以通过静电充电来分离。 然后使液滴通过电场,该电场可以由一对偏转板(44)产生。 通过改变电场来分散液滴 - 例如通过旋转板或通过改变施加于其上的电压 - 或通过改变液滴的电荷来分散液滴。 有利的是,通过使液滴通过低温气体室,可以在飞行中主动冷却液滴。