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58 条记录 (耗时 0.013 秒)

    Current connection and/or cut-off device comprising permanent contacts with reduced wear
    1.
    发明授权
    Current connection and/or cut-off device comprising permanent contacts with reduced wear 有权

    公开(公告)号：US10186389B2

    公开(公告)日：2019-01-22

    申请号：US14435882

    申请日：2013-10-17

    申请人： Alstom Technology Ltd.

    发明人： Oana Aitken ,  Chakib Fnineche

    IPC分类号： H01H33/02 ,  H01H33/12 ,  H01H1/02 ,  H01H1/0233 ,  H01H1/0237 ,  H01H1/38 ,  H01H33/78

    摘要： Device for making and/or breaking a current including a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) being movable. At least one permanent contact (3, 4) including a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end of the main portion (3.1, 4.1), designed to be in mechanical and electrical contact with the other permanent contact (4, 3) only during an operation for opening or closing the pair. The end protection portion (3.2, 4.2) is made of a single transition metal having a melting temperature that is strictly higher than that of the main portion (3.1, 4.1) to which it is secured, or of an oxide or carbide of such a metal, or even of zinc oxide. For application in particular to high- or medium-voltage circuit breakers.

    Contact material for a vacuum interrupter
    2.
    发明授权
    Contact material for a vacuum interrupter 失效
    真空断路器的接触材料

    公开(公告)号：US5420384A

    公开(公告)日：1995-05-30

    申请号：US214016

    申请日：1994-03-15

    申请人： Tsutomu Okutomi ,  Atsushi Yamamoto ,  Tsuneyo Seki ,  Mikio Okawa ,  Mitsutaka Honma

    发明人： Tsutomu Okutomi ,  Atsushi Yamamoto ,  Tsuneyo Seki ,  Mikio Okawa ,  Mitsutaka Honma

    IPC分类号： H01H33/66 ,  H01H1/02 ,  H01H1/0233 ,  H01H33/00

    CPC分类号： H01H1/0203 ,  H01H1/0233 ,  H01H33/664

    摘要： A contact material for a vacuum interrupter includes: (a) from 25 to 70% by volume of a highly conductive component selected from the group consisting of Ag, Cu and combinations thereof, and (b) from 30 to 75% by volume of an arc-proof component comprising a carbide of an element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and combinations thereof, wherein the average grain size of the said arc-proof component is from 0.3 to 3 micrometers and the average grain distance of the arc-proof component is within the range of 0.1 to 1 micrometer. Contacts for a vacuum interrupter obtained from the contact material have improved wear resistance, large current interruption characteristic, wear resistance, and chopping characteristic, and low temperature rise characteristic.

    摘要翻译： 用于真空断路器的接触材料包括：（a）25至70体积％的选自Ag，Cu及其组合的高导电组分，和（b）30至75体积％的 所述防弧成分包括选自Ti，Zr，Hf，V，Nb，Ta，Cr，Mo，W的元素的碳化物及其组合，其中所述防弧成分的平均粒径为 0.3〜3微米，防弧成分的平均晶粒距离在0.1〜1微米的范围内。 从接触材料获得的真空断路器触点具有改善的耐磨性，大电流中断特性，耐磨性和斩波特性，以及低温特性。

    Powder metallurgy method for making an electric contact and the resulting contact
    3.
    发明授权
    Powder metallurgy method for making an electric contact and the resulting contact 失效
    用于制造电触点和结果接触的粉末冶金方法

    公开(公告)号：US3863337A

    公开(公告)日：1975-02-04

    申请号：US28340872

    申请日：1972-08-24

    申请人： SIEMENS AG

    发明人： SCHREINER HORST ,  ROTHKEGEL BERNARD

    IPC分类号： B22F7/00 ,  B22F5/00 ,  H01H1/0233 ,  H01H1/04 ,  H01R9/00

    CPC分类号： H01H1/0233 ,  Y10T29/49206 ,  Y10T29/49215

    摘要： A layer of refractory metal or metal compound powder and a layer of low temperature melting metal or metal alloy powder are arranged together in the cavity of a compacting die and consolidated together to form an integrated two-layer compact which is thereafter heated above said low temperature but below the refractory powder''s sintering temperature to cause the pores of the compact''s refractory portion to be impregnated with the low temperature melting component while leaving an excess thereof forming a thin layer on the refractory portion. Because the two layers of the compact are consolidated together so that the compact may be moved safely without the layers separating during the heating, the use of a continuous furnace for the heating is commercially practical, and because the refractory portion is not sintered, the finished product''s dimensions can be accurately predetermined by the compacting die cavity dimensions. By heating the compact with its low temperature melting end down and resting as a refractory carrier surface having a plurality of depressions beneath this end, said layer is formed with a smooth exposed surface suitable for soldering or welding to a supporting metal part. Thus, a finished electric contact, for example, may be produced by the two steps of compacting and heating only, having a thick contact layer resistant to arc burning and contact welding trouble and a thin support layer that is solderable or weldable to a metal support or operating element.

    摘要翻译： 将难熔金属或金属化合物粉末层和低温熔融金属或金属合金粉末层一起布置在压实模具的空腔中并固结在一起以形成一体的双层压实体，然后将其加热到所述低温 但低于耐火材料粉末的烧结温度，导致压坯的耐火部分的孔被低温熔融成分浸渍，同时留下其过剩，在耐火部分上形成薄层。 由于两层压坯被固结在一起，使得压块可以安全地移动，而在加热期间没有层分离，所以使用用于加热的连续炉是商业上可行的，并且由于耐火部分不被烧结，所以成品 产品的尺寸可以通过压实模腔尺寸精确预定。 通过将其低温熔融端部加热，并将其作为具有在该端部下方的多个凹部的耐火载体表面而保持，所述层形成有适于焊接或焊接到支撑金属部件的光滑的暴露表面。 因此，例如可以通过仅压制和加热的两个步骤来制造完成的电接触，具有耐电弧燃烧和接触焊接故障的厚接触层和可焊接或可焊接到金属支撑件的薄的支撑层 或操作元件。

    Silver base electrical contact material
    10.
    发明授权
    Silver base electrical contact material 失效
    银底座电接触材料

    公开(公告)号：US5591926A

    公开(公告)日：1997-01-07

    申请号：US534203

    申请日：1995-09-26

    申请人： Hayato Inada ,  Koji Tsuji

    发明人： Hayato Inada ,  Koji Tsuji

    IPC分类号： C22C5/06 ,  C22C32/00 ,  H01H1/023 ,  H01H1/0233 ,  H01H1/0237 ,  H01H11/04

    CPC分类号： H01H1/023 ,  C22C32/0021 ,  C22C5/06 ,  H01H1/0233 ,  H01H1/0237

    摘要： A silver base electrical contact material is described which contains uniformly in a silver matrix dispersed particles of nickel, nickel oxide, and at least one additive selected from the group consisting of vanadium, manganese, chromium, thallium, titanium, cobalt, and tungsten carbide. The contact material contains 1.3 to 24.8 wt % of nickel, 0.2 to 4.7 wt % of nickel oxide, 0.05 to 3 wt % of the additive, and balance silver. A superior silver base contact material having excellent welding and wear resistances is obtained by adding the metals and the metal carbide to a silver-nickel-nickel oxide contact material.

    摘要翻译： 描述了银基电接触材料，其均匀地含有银基体分散的镍，氧化镍和至少一种选自钒，锰，铬，铊，钛，钴和碳化钨的添加剂的颗粒。 接触材料含有1.3〜24.8重量％的镍，0.2〜4.7重量％的氧化镍，0.05〜3重量％的添加剂，余量为银。 通过将金属和金属碳化物添加到银 - 镍 - 镍氧化物接触材料中，获得具有优异的焊接和耐磨性的优良的银基接触材料。