Ball mill, a method for preparing fine metal powder, and fine metal powder prepared by the method
    1.
    发明授权
    Ball mill, a method for preparing fine metal powder, and fine metal powder prepared by the method 失效
    球磨机,金属粉末的制备方法以及通过该方法制备的金属微粉末

    公开(公告)号:US06196480B1

    公开(公告)日:2001-03-06

    申请号:US09274020

    申请日:1999-03-22

    IPC分类号: B02C1718

    摘要: There is provided a ball mill having a milling chamber into which metal powder is fed. The ball mill is also provided with milling means for milling metal powder into fine metal powder having a particle size less than a predetermined size. When the ball mill operates, a quantity of heat (Q0) is generated in the milling chamber. The milling chamber is cooled by liquid cooling means and gas cooling means according to the present invention. The liquid cooling means causes cooling liquid to flow along the outside wall of the milling chamber to remove a quantity of heat (Q1) during the ball mill operation. The gas cooling means causes cooling gas to flow through the milling chamber to remove a quantity of heat (Q2) during the ball mill operation. The generated quantity of heat (Q0) can be counterbalanced with the sum of the removed quantities of heat (Q1) and (Q2) so as to prevent the inside of the milling chamber from overheating, so that the ball mill can operate in the condition of Q0/V≧0.05 kW/l, where V is the inner volume of the milling chamber.

    摘要翻译: 提供了一种具有研磨室的球磨机,金属粉末被供给到该研磨室中。 球磨机还设置有用于将金属粉末研磨成具有小于预定尺寸的粒度的细金属粉末的铣削装置。 当球磨机操作时,在研磨室中产生一定量的热量(Q0)。 研磨室由根据本发明的液体冷却装置和气体冷却装置冷却。 液体冷却装置使冷却液沿研磨室的外壁流动,以在球磨机操作期间去除一定量的热量(Q1)。 气体冷却装置使得冷却气体流过研磨室以在球磨机操作期间去除一定量的热量(Q2)。 所产生的热量(Q0)可以与去除的热量(Q1)和(Q2)的总和平衡,以防止研磨室的内部过热,使得球磨机能够在条件 的Q0 / V> = 0.05kW / l,其中V是研磨室的内部体积。

    Hard facing chromium-base alloys
    2.
    发明授权
    Hard facing chromium-base alloys 失效
    硬面铬基合金

    公开(公告)号:US5425822A

    公开(公告)日:1995-06-20

    申请号:US158982

    申请日:1993-11-30

    CPC分类号: C22C27/06

    摘要: A hard facing chromium-base alloy consisting essentially of 30.0 to 48.0% by weight of nickel. 1.5 to 15.0% by weight of tungsten and/or 1.0 to 6.5% by weight of molybdenum, the balance being more than 40.0% by weight of chromium, and the maximum sum of tungsten and molybdenum being 15.0% by weight. The alloy may also contain one or more of iron, cobalt, carbon, boron, aluminum, silicon, niobium and titanium. When the alloy is used in powder form as a material for hard facing by welding, the alloy may further contain 0.01 to 0.12% by weight of aluminum, yttrium, misch metal, titanium, zirconium and hafnium. 0.01 to 0.1% by weight of oxygen may also be added to the alloy. The alloy has a high degree of toughness wear resistance and corrosion resistance. The alloy can be used as a hard facing material to be applied to various objects, such as automobile engine valves.

    摘要翻译: 基本上由30.0至48.0重量%的镍组成的硬质铬基合金。 1.5至15.0重量%的钨和/或1.0至6.5重量%的钼,余量大于40.0重量%的铬,钨和钼的最大总和为15.0重量%。 合金还可以含有铁,钴,碳,硼,铝,硅,铌和钛中的一种或多种。 当合金以粉末形式用作通过焊接的硬面材料时,该合金还可以含有0.01至0.12重量%的铝,钇,混合金属,钛,锆和铪。 也可以向合金中添加0.01〜0.1重量%的氧。 该合金具有高韧性耐磨性和耐腐蚀性。 该合金可以用作用于各种物体的硬质材料,例如汽车发动机阀门。

    Hard facing chromium-base alloys
    3.
    发明授权
    Hard facing chromium-base alloys 失效
    硬面铬基合金

    公开(公告)号:US5314659A

    公开(公告)日:1994-05-24

    申请号:US883960

    申请日:1992-05-15

    CPC分类号: C22C27/06

    摘要: A hard facing chromium-base alloy consisting essentially of 30.0 to 48.0% by weight of nickel, 1.5 to 15.0% by weight of tungsten and/or 1.0 to 6.5% by weight of molybdenum, the balance being more than 40.0% by weight of chromium, and the maximum sum of tungsten and molybdenum being 15.0% by weight. The alloy may also contain one or more of iron, cobalt, carbon, boron, aluminum, silicon, niobium and titanium. When the alloy is used in powder form as a material for hard facing by welding, the alloy may further contain 0.01 to 0.12% by weight of aluminum, yttrium, misch metal, titanium, zirconium and hafnium. 0.01 to 0.1% by weight of oxygen may also be added to the alloy. The alloy has a high degree of toughness, wear resistance and corrosion resistance. The alloy can be used as a hard facing material to be applied to various objects, such as automobile engine valves.

    摘要翻译: 基本上由30.0至48.0重量%的镍,1.5至15.0重量%的钨和/或1.0至6.5重量%的钼组成的硬质铬基合金,余量大于40.0重量%的铬 ,钨和钼的最大总和为15.0重量%。 合金还可以含有铁,钴,碳,硼,铝,硅,铌和钛中的一种或多种。 当合金以粉末形式用作通过焊接的硬面材料时,该合金还可以含有0.01至0.12重量%的铝,钇,混合金属,钛,锆和铪。 也可以向合金中添加0.01〜0.1重量%的氧。 该合金具有高韧性,耐磨性和耐腐蚀性。 该合金可以用作用于各种物体的硬质材料,例如汽车发动机阀门。