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1. 发明专利

JPH10265808A PRODUCTION OF HEAT TREATING VESSEL, CONTACT POINT ALLOY 失效
公开(公告)号：JPH10265808A
公开(公告)日：1998-10-06
申请号：JP7348697
申请日：1997-03-26
申请人： SHIBAFU ENG KK , TOSHIBA ELECTRONIC ENG , TOSHIBA CORP
发明人： OKUTOMI ISAO , SEKIGUCHI SHIGEAKI , KUSANO TAKASHI , YAMAMOTO ATSUSHI , SEKI KEISEI
IPC分类号： B22F3/10 , C22C1/04 , H01H1/02 , H01H11/04 , H01H33/66
摘要： PROBLEM TO BE SOLVED: To obtain a contact point alloy having stable large current shutting-off performance and more particularly restrike suppression characteristic by specifying the average surface roughness of at least either of the open surface and cap of a vessel constituting a heat treating vessel. SOLUTION: The average surface roughness of at least either of the open surface end of the heat treating vessel and the cap facing the open surface end is specified to 5 to 25 μm (Rmax.). As a result, the self-adjustment of the quality and pressure of the inside of the vessel and the external atmosphere at the time of a heat treatment through the vent path on the surface of the heat treating vessel or the cap while executing the ventilating and hermetic sealing to the atmospheric state desirable for the heat treatment is made possible and the fluctuations in the compd. ratios based on the excessive selective evaporation splashing of the high vapor pressure component in the contact point alloy are eliminated. The contact point alloy component ratios after the heat treatment are this kept constant. Any one among metallic Cr, Cr carbide, Cr oxide, Al oxide and Ti oxide is preferably arranged in at least one part of the vessel and the cap.

2. 发明专利

JPH05230565A LONG LIFE CONTACT MATERIAL 失效
公开(公告)号：JPH05230565A
公开(公告)日：1993-09-07
申请号：JP3092892
申请日：1992-02-18
申请人： TOSHIBA CORP
发明人： MAJIMA YOSHIKO , SEKIGUCHI SHIGEAKI
IPC分类号： C22C1/04 , C22C1/10 , C22C9/00 , H01H1/02 , H01H1/023 , H01H1/025 , H01H11/04 , H01H33/66
摘要： PURPOSE:To provide a long life contact material less in deposition and consumption even when high-frequently turning ON/OFF operations are performed and also capable of simplifying the maintenance of electrical equipment having a contact. CONSTITUTION:This long life contact material is a long life contact material formed by impregnating the pores of a sintered compact, which consists of a highly electrically conductive component consisting of Cu and/or Ag, at least one arc resisting component selected from W, Mo, Ti, Cr, Ta, Nb, Zr, and compounds thereof, and TiB2 or Al2O3, with the highly electrically conductive component further. The content of the highly electrically conductive component is regulated to 20-45wt.%, and further, the content of the arc resisting component and the content of TiB2 or Al2O3 are regulated to 55-80wt.% and 0.1-5wt.%, respectively.

3. 发明专利

JPH03108224A CONTACT MATERIAL VACUUM VALVE 失效
公开(公告)号：JPH03108224A
公开(公告)日：1991-05-08
申请号：JP24335189
申请日：1989-09-21
申请人： TOSHIBA CORP
发明人： OKUTOMI ISAO , YAMAMOTO ATSUSHI , SEKI KEISEI , CHIBA SEIJI , SEKIGUCHI SHIGEAKI
IPC分类号： H01H33/66
摘要： PURPOSE:To concurrently obtain the excellent low current cutting characteristic and the high-frequency arc extinguishing characteristic by optimizing the content, ratio and existing state of Ag and Cu, and further atomizing the organization of a contact material. CONSTITUTION:A contact material for a vacuum valve is the Ag-Cu-Cr3C2 contact material for a vacuum valve containing a high conducting component of Ag and Cr and an arc-resistant component of Cr3C2, the content of the high conducting component is set as follows: the total quantity of Ag and Cr 40-80wt.%, the ratio of Ag in the total quantity of Ag and Cu 40-80wt.%, and the content of the arc-resistant component 20-60wt.%. The organization of the contact material is constituted of the matrix of the high conducting component, the discontinuous phase with the thickness or width 5mum or below, and discontinuous grains of Cr3C2 10mum. or below, and the discontinuous phase of the high conducting component is finely and uniformly distributed in the matrix at the interval 5mum or below.

4. 发明专利

JPH0254819A CONTACT MATERIAL FOR VACUUM VALVE 失效
公开(公告)号：JPH0254819A
公开(公告)日：1990-02-23
申请号：JP20596588
申请日：1988-08-19
申请人： TOSHIBA CORP
发明人： OKUTOMI ISAO , YAMAMOTO ATSUSHI , CHIBA SEIJI , SEKIGUCHI SHIGEAKI , OKAWA MIKIO , HONMA MITSUTAKA , OTOBE KIYOBUMI , SATO TAKANARI , SEKI KEISEI
IPC分类号： H01H33/66 , H01H1/02 , H01H1/0233
摘要： PURPOSE:To provide both a low cutting current characteristic and a high frequency arc-extinguishing characteristic by having a content of Ag and Cu, contact materials of Ag-Cu-WC system, and that of WC, and also structure of the contact materials defined respectively. CONSTITUTION:In a contact material for an Ag-Cu-WC system vacuum valve, Ag and Cu of high conductive components and WC of an anti-arc component are included. For a content of high conductive components, that of Ag+Cu is defined as 25 to 65wt.%, while that of Ag/(Ag+Cu) defined as 40 to 80wt.%. Also, a content of an anti-arc compound is defined as 35 to 75wt.%. Further, structure of the contact material is composed of a matrix of high conductive component and a discontinuous phase of thickness or of width of 5 micrometer or less, and of a discontinuous grain of an anti-arc component of 1 micrometer or less, the discontinuous phase of the high conductive component being dispersed in the matrix finely and homogeneously at an interval of 5 micrometer or less. In the structure as mentioned above, both a low cutting current characteristic and a high frequency arc-extinguishing characteristic can be provided.

5. 发明专利

JPS6396203A PRODUCTION OF METALLIC MEMBER 失效
公开(公告)号：JPS6396203A
公开(公告)日：1988-04-27
申请号：JP24137986
申请日：1986-10-13
申请人： TOSHIBA CORP
发明人： SEKIGUCHI SHIGEAKI , OKUTOMI ISAO
IPC分类号： C21D1/00 , B22F3/10 , B22F3/26 , C22F1/00
摘要： PURPOSE:To easily obtain a good metallic member with good workability by inserting a fibrous ceramic between a heat treatment jig and the metallic member at the time of housing the metallic member into the heat treatment jig and subjecting the member to a heat treatment. CONSTITUTION:A woven and knitted member consisting of fibrous ceramics is interposed between the heat treatment jig and the metallic member at the time of housing the metallic member into the heat treatment jig and subjecting the member to the heat treatment such as sintering or infiltration. The heat treatment jig has a boat- or plate shape and contains carbon. The metallic member is a member contg. at least one kind among Fe, Mo, W, V, Nb, Ta, Ti, Zr, Ni and Co and having carbide formability. The fibrous ceramics is preferably composed essentially of Al2O3 and/or SiO2. The reaction and wetting of the metallic member with the heat treatment jig at the time of the heat treatment are thereby prevented and the good metallic member is obtd.

6. 发明专利

JPS62150618A MANUFACTURE OF CONTACT ALLOY FOR VACUUM VALVE 失效
公开(公告)号：JPS62150618A
公开(公告)日：1987-07-04
申请号：JP29134285
申请日：1985-12-24
申请人： TOSHIBA CORP
发明人： OKUTOMI ISAO , CHIBA SEIJI , SEKIGUCHI SHIGEAKI
IPC分类号： H01H1/023 , B22F3/00 , H01H20060101 , H01H1/02 , H01H1/025 , H01H11/04 , H01H33/66

7. 发明专利

JPS62127449A ELECTRODE MATERIAL FOR ELECTRIC DISCHARGE MACHINING AND ITS PRODUCTION 失效
公开(公告)号：JPS62127449A
公开(公告)日：1987-06-09
申请号：JP26389385
申请日：1985-11-26
申请人： TOSHIBA CORP
发明人： SEKIGUCHI SHIGEAKI , MATSUURA IKUO
IPC分类号： B23H1/06 , C22C1/04 , C22C27/04
摘要： PURPOSE:To manufacture an electrode material for electric discharge machining excellent in workability and having superior consumption characteristics, by mixing powdered W and powdered Ca, by subjecting the resulting powder mixture to compacting and sintering, and by infiltrating Cu or Ag into the obtained sintered compact so as to form a specific composition. CONSTITUTION:The powdered W and the powdered Ca are mixed in a prescribed ratio, and the powder mixture is compacted and sintered with proper addition of a binder. It is preferable that the average grain size of above- mentioned powdered W is 2-10mum and that sintering is carried out at about 1,000-1,200 deg.C in a nonoxidizing atmosphere. Then Cu and/or Ag is infiltrated into a skeleton consisting of W and Ca obtained by the above-mentioned sintering at about 1,100-1,300 deg.C, so that electrode material for electric discharge machining having a composition consisting of 0.3-3.0wt% Ca, 20-40wt% of Cu and/or Ag, and the balance W can be obtained. The above electrode material is reduced in bores, excellent in workability such as grindability, polishability, etc., and further reduced in electrode consumption in the working of super hard materials, so that long-lived electrodes can be obtained.

8. 发明专利

JPS5935643A Production of contact point material 失效
标题翻译：生产接触点材料
公开(公告)号：JPS5935643A
公开(公告)日：1984-02-27
申请号：JP14384482
申请日：1982-08-19
申请人： Toshiba Corp
发明人： OKUTOMI ISAO , SUZUKI HIDEO , SEKIGUCHI SHIGEAKI , MATSUURA IKUO
IPC分类号： B22F1/00 , C22C1/04 , C22C1/05 , C22C1/10 , H01H11/04
摘要： PURPOSE: To produce a sintered type contact point material having a uniform contact point characteristic by mixing a part of the main componet material powder of roughly the same amt. as the amt. of auxiliary component material powder with the auxiliary powder then mixing the remaining main component material powder therewith.
CONSTITUTION: A main component material is constituted of about 15W65% highly conductive components consisting of at least 1 kind of Cu and Ag, and the balance an arc resistant component of at least 1 kind among W, Mo, Cr, Ti, WC, MoC, Cr
3 C
2 , TiC. An auxiliary component material is constituted of a component for preventing melt sticking consisting at least 1 kind among Bi, Te, Sb, and a component for improving sintering property consisting of at least 1 kind among Ni, Fe, Co, B. The content of the auxiliary component material in the product, i.e., contact point material, is set at ≤3wt%, and part of the main component material of roughly the same amt. as the amt. of the auxiliary component material is first mixed with the auxiliary component material to prepare a primary powder mixture; further, the remaining main component material is mixed therewith. Such powder mixture is molded under about 1W10 tons/ cm
2 pressure and is sintered at about 1,000W1,300°C in a non-oxidative atmosphere, whereby the contact point material is obtd.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过混合大致相同的主要成分材料粉末的一部分，制造具有均匀接触点特性的烧结型接触点材料。作为amt。辅助成分材料粉末与辅助粉末混合，然后将剩余的主要成分材料粉末与其混合。构成：主要成分材料由至少1种Cu和Ag组成的约15-65％的高导电性组分构成，余量为W，Mo，Cr，Ti，WC中至少1种的电弧组分，MoC，Cr3C2，TiC。辅助成分材料由用于防止在Bi，Te，Sb中至少1种的熔融粘附的组分和用于改善由Ni，Fe，Co，B中的至少1种组成的烧结性的组分构成。产品中的辅助成分材料即接触点材料设定为<= 3wt％，主要成分材料的一部分大致相同。作为amt。的辅助成分材料首先与辅助成分材料混合以制备初级粉末混合物; 此外，剩余的主要成分材料与其混合。将这种粉末混合物在约1-10吨/ cm 2的压力下成型，并在非氧化性气氛中在约1,000-1300℃下烧结，由此可以接触接触材料。

9. 发明专利

JPS5925948A Tungsten alloy for electrode of ignition plug 失效
标题翻译：用于点火电极的钨合金
公开(公告)号：JPS5925948A
公开(公告)日：1984-02-10
申请号：JP13470582
申请日：1982-08-03
申请人： Toshiba Corp
发明人： KOIZUMI HIDEO , FUKUHARA YOSHIO , HAYASHI KEISUKE , SEKIGUCHI SHIGEAKI , MATSUURA IKUO
IPC分类号： C22C27/04 , H01T13/20 , H01T13/39
摘要： PURPOSE: To improve the oxidation resistance of an electrode of an ignition plug by using tungsten contg. a high m.p. metal as the material of the electrode.
CONSTITUTION: An electrode of an ignition plug is made of tungsten contg. 3W 10wt% Re and/or Ta as high m.p. metals or tungsten contg. ThO
2 or ZrO
2 as an electron emitting substance as well as Re and/or Ta. The resulting electrode has improved oxidation resistance and improved resistance to consumption due to arc by the effect of the combination of the high m.p. metal with the electron emitting substance.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过使用钨丝来提高火花塞电极的抗氧化性。高温金属作为电极的材料。构成：火花塞的电极由钨制成。 3-10wt％Re和/或Ta高。金属或钨 ThO 2或ZrO 2作为电子发射物质以及Re和/或Ta。所得电极具有改善的抗氧化性，并且通过高熔点组合的效果，由于电弧而提高了耐消耗电流。金属与电子发射物质。

10. 发明专利

JPH09213153A CONTACT MATERIAL FOR VACUUM BREAKER AND MANUFACTURE OF CONTACT MATERIAL 失效
公开(公告)号：JPH09213153A
公开(公告)日：1997-08-15
申请号：JP2074296
申请日：1996-02-07
申请人： SHIBAFU ENG KK , TOSHIBA CORP
发明人： OKUTOMI ISAO , SEKIGUCHI SHIGEAKI , SEKI KEISEI , KUSANO TAKASHI , YAMAMOTO ATSUSHI
IPC分类号： H01H1/025 , H01H1/02 , H01H11/04
摘要： PROBLEM TO BE SOLVED: To provide a contact material for vacuum breaker, which can stabilize the fusion-resistant and non-consumable characteristics and excels in the breaking performance. SOLUTION: This contact material for a vacuum breaker is composed of a high conductive component containing either or both of Cu and Ag, an arc resistance component having particle sizes between 0.1-150μm and containing Cr in at least 90vol.% of the whole contents, and the first auxiliary component having particle sizes between 0.1-150μm and containing either or both of Al and Si, and these are mixed together uniformly to prepare a mixture powder, and the relative density is made over 88%.

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