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公开(公告)号：US20180240612A1
公开(公告)日：2018-08-23
申请号：US15751595
申请日：2016-08-10
IPC分类号： H01H1/02 , B22F3/26 , C22C27/04 , H01H33/664 , H01H11/04
CPC分类号： H01H1/0206 , B22F3/26 , B22F2301/20 , B22F2304/10 , C22C1/04 , C22C5/04 , C22C9/00 , C22C9/10 , C22C14/00 , C22C16/00 , C22C25/00 , C22C27/02 , C22C27/04 , C22C27/06 , C22C30/02 , H01H11/048 , H01H33/662 , H01H33/664
摘要： It is an electrode material that is used as an electrode contact of a vacuum interrupter and that contains one or more parts by weight of a heat-resistant element and one part by weight of Cr, the remainder being Cu and an unavoidable impurity. A part of Cr powder and the heat-resistant element powder are mixed together, and this mixed powder is sintered such that a peak corresponding to Cr element disappears in X-ray diffraction measurement. A solid solution powder obtained by pulverizing a sintered body of the heat-resistant element and Cr obtained by the sintering is mixed with the remaining Cr powder, and this mixed powder is shaped and then sintered. A sintered body obtained by this sintering is infiltrated with Cu.
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公开(公告)号：US20180182573A1
公开(公告)日：2018-06-28
申请号：US15738275
申请日：2016-06-21
发明人： Shota HAYASHI , Keita ISHIKAWA , Kenta YAMAMURA , Kosuke HASEGAWA
CPC分类号： H01H11/048 , B22F1/00 , B22F1/0011 , B22F3/10 , B22F7/00 , B22F2301/10 , B22F2301/20 , C22C1/04 , C22C9/00 , C22C9/10 , C22C30/02 , H01H1/0206 , H01H11/04 , H01H33/664
摘要： It is a method for manufacturing an electrode material containing Cu, Cr, a heat-resistant element, and a low melting metal. A Cr powder and a heat-resistant element powder are mixed together in a ratio such that the Cr is greater than the heat-resistant element by weight. The mixed powder of the heat-resistant element and the Cr powder is baked. A MoCr solid solution obtained by the baking and containing a solid solution of the heat-resistant element and the Cr is pulverized and then classified. The classified MoCr solid solution powder, a Cu powder, and a low-melting metal powder are mixed together, followed by sintering at a temperature that is 1010° C. or higher and is lower than 1038° C., thereby obtaining the electrode material.
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公开(公告)号：US20220108854A1
公开(公告)日：2022-04-07
申请号：US17428434
申请日：2019-02-06
申请人： MEIDENSHA CORPORATION , SECHERON SA
发明人： Kenta YAMAMURA , Takaaki FURUHATA , Hideki KOMATSU , Kosuke HASEGAWA , Tetsuya KANNO , Bjorn FISCHER , Tarek LAMARA , Claudio TRICARICO
IPC分类号： H01H33/662 , H01H33/664
摘要： A vacuum interrupter (1) is equipped with a vacuum container (2) and a fixed electrode (3) and a movable electrode (4), which are provided in the vacuum container (2). The vacuum container (2) is constructed by hermetically joining a fixed-side end plate (6) to one end portion of an insulating tube (5) and by hermetically joining a movable-side end plate (7) to the other end portion of the insulating tube (5). The insulating tube (5) is equipped at its end portion with a projection portion (5a) that projects in an axial direction of the insulating tube (5) along an outer periphery of the insulating tube (5). The insulating tube (5) is equipped at its end portion with an end plate joining portion (5b) that projects from a base end portion of the projection portion (5a) in an inner peripheral direction of the insulating tube (5). The end plate joining portion (5b) is equipped on its surface with a metallized layer (8) to which the fixed-side end plate (6) (or the movable-side end plate (7)) is joined by brazing. The metallized layer (8) is equipped with a joining portion (8a) that extends in a radial direction of the insulating tube (5), and an extension portion (8b) that extends in an axial direction of the insulating tube (5) from an end portion of the joining portion (8a) on an inner peripheral side of the insulating tube (5).
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公开(公告)号：US20190299285A1
公开(公告)日：2019-10-03
申请号：US16307538
申请日：2017-03-15
发明人： Shota HAYASHI , Keita ISHIKAWA , Kenta YAMAMURA , Kosuke HASEGAWA , Hideaki FUKUDA , Akira SANO
摘要： There is disclosed a method for manufacturing an electrode by pressing and sintering a mixed powder of a solid solution powder of Cr and a heat-resistant element, which contains Cr and the heat-resistant element in a ratio such that Cr is greater than the heat-resistant element by weight, a Cu powder, and a low melting metal powder (Bi, Sn, Se, Pb, etc.). The low melting metal powder of 0.30 weight % to 0.50 weight % is added to a mixed powder of a solid solution powder of Cr and the heat-resistant element and the Cu powder, and then a mixed powder prepared by adding the low melting metal powder is sintered at a temperature of from 1010° C. to 1035° C. As the low melting metal powder, there is used a powder having a median size of from 5 μm to 20 μm.
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公开(公告)号：US20180174771A1
公开(公告)日：2018-06-21
申请号：US15570433
申请日：2016-04-26
IPC分类号： H01H1/02 , C22C1/04 , C22C9/00 , C22C27/06 , B22F9/04 , B22F5/00 , B22F1/00 , H01H11/04 , H01H33/664
CPC分类号： H01H1/0206 , B22F1/00 , B22F1/0003 , B22F5/00 , B22F9/04 , B22F2301/10 , C22C1/04 , C22C1/0425 , C22C9/00 , C22C27/06 , H01H1/025 , H01H11/04 , H01H11/048 , H01H33/662 , H01H33/664 , H01H2201/03
摘要： It is a method for producing an electrode material containing Cu, Cr and a heat-resistant element. A heat-resistant element powder and a Cr powder are mixed together in a ratio such that the heat-resistant element is less than the Cr by weight. A mixed powder of the heat-resistant element powder and the Cr powder is baked. A sintered body obtained by the baking and containing a solid solution of the heat-resistant element and the Cr is pulverized, and a solid solution powder obtained by the pulverizing is classified, to have a particle size of 200 μm or less. 10-60 parts by weight of the classified solid solution powder and 90-40 parts by weight of a Cu powder are mixed together, followed by sintering to obtain the electrode material. If a low melting metal powder having a median size of 5-40 μm is mixed with a mixed powder of the solid solution powder and the Cu powder, the deposition resistance property is further improved.
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