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    High-density high-conductivity electrical contact material for vacuum interrupters and method of manufacture
    1.
    发明授权
    High-density high-conductivity electrical contact material for vacuum interrupters and method of manufacture 失效
    用于真空灭弧室的高密度高导电电接触材料及其制造方法

    公开(公告)号：US4190753A

    公开(公告)日：1980-02-26

    申请号：US895832

    申请日：1978-04-13

    申请人： Robert E. Gainer

    发明人： Robert E. Gainer

    IPC分类号： H01H33/66 ,  C22C1/04 ,  H01H1/02

    CPC分类号： H01H1/0206 ,  C22C1/0425 ,  Y10T428/1216

    摘要： A vacuum interrupter contact is formed of copper and chromium which exhibits high electrical conductivity and a high density of greater than about 95% of the theoretical density of the materials. The copper is the predominant constituent, and a mixture of copper and chromium powder is cold-pressed to form a compact which is then vacuum-sintered at a temperature below the melting point of the copper to achieve the desired high density.

    摘要翻译： 真空断路器接触由铜和铬形成，其表现出高导电性和高于材料理论密度的约95％的高密度。 铜是主要成分，并且将铜和铬粉末的混合物冷压以形成压块，然后在低于铜的熔点的温度下进行真空烧结，以达到所需的高密度。

    Vacuum circuit interrupter contacts containing chromium dispersions
    2.
    发明授权
    Vacuum circuit interrupter contacts containing chromium dispersions 失效
    含铬分散体的真空断路器触点

    公开(公告)号：US4766274A

    公开(公告)日：1988-08-23

    申请号：US147420

    申请日：1988-01-25

    申请人： Natraj C. Iyer ,  Alan T. Male ,  Sidney J. Cherry ,  Robert E. Gainer

    发明人： Natraj C. Iyer ,  Alan T. Male ,  Sidney J. Cherry ,  Robert E. Gainer

    IPC分类号： B22F1/00 ,  C22C1/04 ,  H01H1/02 ,  H01H33/66

    CPC分类号： C22C1/0425 ,  B22F1/0003 ,  H01H1/0206

    摘要： A powdered metallurgical procedure for forming chromium copper contacts used in vacuum circuit interrupters, in which prealloyed powder formed by mixing to copper, chromium of between two to thirty-seven weight percent is rapidly solidified after melting at about 1100.degree. C. to 1500.degree. C. This powder may be blended with additional chromium of between 12 to 50 weight percent with a maximum of fifty-five weight percent of chromium in the final contact structure. This blended mixture may then be either (i) cold pressed at 100,000 psig. and vacuum sintered at 800.degree. to 1400.degree. C.; or (ii) be subjected to hot isostatic pressure of 10,000 to 30,000 psig. at between 700.degree. C. to 1080.degree. C.; or (iii) containing the blended copper-chromium powder and the additional chromium powder into an evacuated can and hot extruding the can between 400.degree. C. to 900.degree. C., to form the contacts.

    摘要翻译： 在真空断路器中使用的用于形成铬铜触点的粉末冶金方法，其中通过混合形成的铜，二至三十七重量％的铬形成的预合金粉末在约1100℃至1500℃熔化后快速固化 该粉末可以与最终接触结构中的铬重量的比例为12-50重量％，最多为五十五重量％的铬。 该混合混合物可以（i）以100,000psig冷压。 并在800〜1400℃真空烧结。 或（ii）经受10,000至30,000psig的热等静压。 在700℃至1080℃之间。 或（iii）将共混的铜 - 铬粉末和另外的铬粉末包含在抽真空的罐中，并将罐热挤压在400℃至900℃之间，以形成接触。

    Method for making multi-element brushes
    3.
    发明授权
    Method for making multi-element brushes 失效
    制造多元素刷的方法

    公开(公告)号：US4261099A

    公开(公告)日：1981-04-14

    申请号：US61230

    申请日：1979-07-27

    申请人： Robert E. Gainer, Jr.

    发明人： Robert E. Gainer, Jr.

    IPC分类号： H01R43/12 ,  H01R39/24 ,  H02K13/00

    CPC分类号： H01R39/24 ,  H01R43/12 ,  Y10T29/49201

    摘要： A method of making electrical brushes from thousands of hair-like fibers comprises wetting the fibers to hold them together in a bundle, placing the bundle in a tube and reducing the opening in the tube to hold the fibers therein.

    摘要翻译： 从数千根毛状纤维制造电刷的方法包括将纤维润湿以将其保持在一起成束，将束放置在管中并减少管中的开口以将纤维保持在其中。

    Powdered metallurgical process for forming vacuum interrupter contacts
    4.
    发明授权
    Powdered metallurgical process for forming vacuum interrupter contacts 失效
    用于形成真空断路器触点的粉末冶金工艺

    公开(公告)号：US3960554A

    公开(公告)日：1976-06-01

    申请号：US476177

    申请日：1974-06-03

    申请人： Robert E. Gainer, Jr.

    发明人： Robert E. Gainer, Jr.

    IPC分类号： B22F3/26 ,  C22C1/04 ,  C22C9/00 ,  C22C27/06 ,  H01H1/02 ,  H01H11/04 ,  H01H33/66 ,  B22F3/00 ,  B22F1/00 ,  B22F1/02 ,  B22F1/04

    CPC分类号： H01H1/0206 ,  C22C1/04 ,  H01H11/048 ,  Y10T428/1216

    摘要： A powdered metallurgical procedure for forming chromium copper contacts used in vacuum interrupters, wherein by adding a small amount of copper powder to the difficult-to-press chromium powder, superior pressed properties are attained and a resulting chromium compact having higher green strength is produced. By practicing the teaching of this invention, vacuum interrupter contacts can be pressed to complex shapes. It is desirable to have a vacuum interrupter contact having an approximately 50% chromium composition. The low compacting pressure necessary to produce a 40% to 60% chromium powder concentrations yields a compact having a very low green strength which cannot be ejected from a die without falling apart; by adding a small amount of copper powder to the chromium powder before pressing a compact having a much higher green strength, which can be readily handled, is obtained. Using the disclosed process a press to shape contact having a variable density can be attained. This process can be used to produce a desirable chromium compact having a high density on the peripheral areas which decreases to a lower density in the center contact area.

    摘要翻译： 用于形成真空断路器中使用的铬铜触点的粉末冶金方法，其中通过向难以压制的铬粉末加入少量的铜粉末，获得了优异的压制性能，并且产生了具有较高生坯强度的所得铬压坯。 通过实践本发明的教导，可以将真空断路器触点按压成复杂的形状。 期望具有具有约50％铬组成的真空断续器接触。 产生40％至60％的铬粉末浓度所需的低压实压力产生具有非常低的生坯强度的压坯，其不会从模具中排出而不会分离; 通过在对可以容易地处理的具有高得多的绿色强度的成形体进行压制之前，向铬粉末添加少量的铜粉末。 使用所公开的方法，可以获得压制成型具有可变密度的接触。 该方法可用于在周边区域产生具有高密度的期望的铬压块，其在中心接触区域中降低至较低的密度。