EP0182386B1 - Procédé de fabrication de pièces de contact - Google Patents

Procédé de fabrication de pièces de contact Download PDF

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Publication number
EP0182386B1
EP0182386B1 EP85114864A EP85114864A EP0182386B1 EP 0182386 B1 EP0182386 B1 EP 0182386B1 EP 85114864 A EP85114864 A EP 85114864A EP 85114864 A EP85114864 A EP 85114864A EP 0182386 B1 EP0182386 B1 EP 0182386B1
Authority
EP
European Patent Office
Prior art keywords
contact parts
cdo
cuo
mass content
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85114864A
Other languages
German (de)
English (en)
Other versions
EP0182386A2 (fr
EP0182386A3 (en
Inventor
Horst Prof. Dr. Schreiner
Bernhard Rothkegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6190546&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0182386(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT85114864T priority Critical patent/ATE57789T1/de
Publication of EP0182386A2 publication Critical patent/EP0182386A2/fr
Publication of EP0182386A3 publication Critical patent/EP0182386A3/de
Application granted granted Critical
Publication of EP0182386B1 publication Critical patent/EP0182386B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
    • C22C32/0021—Matrix based on noble metals, Cu or alloys thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/023—Composite material having a noble metal as the basic material
    • H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
    • H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
    • H01H1/02376—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te containing as major component SnO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
    • B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Definitions

  • the invention relates to a method for producing contact pieces for low-voltage switching devices in power engineering from a material of the constitution AgSn0 2 Bi 2 03CuO.
  • contact materials based on AgCdO with Cd0 as the main active component have proven to be particularly advantageous in the past. These contact materials show a small burn-up in the arc, a low welding force and a low heating with continuous current.
  • a contact material which is produced by oxidation of a plated silver alloy sheet with 3 to 15 wt.% Tin, 0.01 to 1 wt.% Bismuth and 0.1 to 8.5 wt. -% Cu is made. This results in a material of the constitution AgSn0 2 Bi 2 0 3 CuO.
  • DE-A-27 54 335 discloses a contact material based on silver metal oxide, in which 1.5 to 6% by weight bismuth oxide and 0.1 to 6% by weight tin oxide, based on the total amount of oxide, are present should.
  • copper oxide or zinc oxide can also be present, but bismuth oxide and tin oxide always dominate and are of the same order of magnitude.
  • the invention has for its object to provide a method with which the production of contact pieces from AgSn0 2 Bi 2 0 3 CuO materials can be done economically.
  • Process step f) of the process according to the invention is preferably followed by a further sintering at approximately 850 ° C. for one hour and a cold compression.
  • the contact pieces are produced by powder metallurgy using an internally oxidized alloy powder.
  • Example Manufacture of a sintered contact material from AgSnO 2 Bi 2 OaCuO and the contact piece.
  • An alloy of AgSnBiCu of the specified composition is melted from 90.15% mass content of fine silver grains, 8.05% mass content of tin grains, 0.90% mass content of metallic bismuth as fragments and 0.90% mass content of copper in the form of rods.
  • An alloy powder of the same composition is produced from it by pressure atomization with water. After drying, the powder fraction smaller than 200 ⁇ m is sieved off. This portion is internally oxidized in air between 500 and 800 ° C, after which a composite powder of AgSn0 2 Bi 2 03CuO with the composition 87.95% mass content Ag, 9.97% mass content Sn0 2 , 0.98% mass content Bi 2 0s and 1.10% mass content of Cu0 is obtained.
  • the composite powder can be used to produce contact pieces by pressing in a die with 600 MPa. For secure connection technology by brazing, it is useful to press a second layer of pure silver powder together with the contact layer when pressing the composite powder.
  • the contact pieces are sintered at 850 ° C for one hour in air.
  • the contact pieces are compacted by hot pressing at 650 ° C with 800 MPa. Further compression and solidification can be achieved by a second sintering at 850 ° C for one hour in air and a subsequent further cold compression.
  • the contact properties of such contact pieces were measured on a test switch.
  • the burn-up values were about 25% better compared to an extruded AgSn0 2 grade with the same oxide content.
  • 50% lower Fs 99.9 values were achieved in the welding force values and 10% lower values in the contact resistance.
  • the structure of the contact material is very fine and even.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Contacts (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Switches (AREA)
  • Conductive Materials (AREA)
  • Mechanisms For Operating Contacts (AREA)

Claims (3)

1. Procédé de fabrication de pièces de contact pour des appareils de coupure basse tension dans la technique des courants forts, en un matériau ayant la constitution AgSnO2Bi2O3CuO, caractérisé par les stades procédés suivants :
a) à partir d'un alliage d'AgSnBiCu ayant la composition prescrite, on prépare, par désintégration à l'eau sous pression, une poudre d'alliage,
b) après le séchage, on tamise la fraction de poudre inférieure à 200 µm, et
c) on l'oxyde intimement à l'air entre 500 et 800°C, de manière à obtenir une poudre composite en AgSn02Bi203CuO,
d) on fabrique des pièces de contact à partir de la poudre composite, par compression dans une matrice à 600 MPa,
e) on fritte les pièces de contact à environ 850°C, pendant une heure,
f) on densifie davantage les pièces de contact par post-compression à chaud à 650°C environ, sous 800 MPa.
2. Procédé suivant la revendication 1, caractérisé en ce qu'au stade de procédé f) fait suite un autre frittage à 850°C environ, pendant une heure et une densification à froid.
3. Procédé suivant la revendication 1, de fabrication de pièces de contact en un matériau ayant une teneur pondérale en Ag de 87,95 %, une teneur pondérale en Sn02 de 9,97 %, une teneur pondérale en Bi203 de 0,98 % et une teneur pondérale en CuO de 1,1 %, caractérisé en ce qu'il consiste à utiliser, pour le stade de procédé a), un alliage d'AgSnBiCu constitué de 90,15 % d'Ag, de 8,05 % de Sn, de 0,9 % de Bi et de 0,9 % de Cu.
EP85114864A 1983-02-10 1984-01-30 Procédé de fabrication de pièces de contact Expired - Lifetime EP0182386B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114864T ATE57789T1 (de) 1983-02-10 1984-01-30 Verfahren zur herstellung von kontaktstuecken aus diesem werkstoff.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3304637 1983-02-10
DE19833304637 DE3304637A1 (de) 1983-02-10 1983-02-10 Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP84100927.7 Division 1984-01-30

Publications (3)

Publication Number Publication Date
EP0182386A2 EP0182386A2 (fr) 1986-05-28
EP0182386A3 EP0182386A3 (en) 1987-01-14
EP0182386B1 true EP0182386B1 (fr) 1990-10-24

Family

ID=6190546

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84100927A Expired EP0118708B1 (fr) 1983-02-10 1984-01-30 Matériau de contact fritté pour appareillages interrupteurs à basse tension
EP85114864A Expired - Lifetime EP0182386B1 (fr) 1983-02-10 1984-01-30 Procédé de fabrication de pièces de contact

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP84100927A Expired EP0118708B1 (fr) 1983-02-10 1984-01-30 Matériau de contact fritté pour appareillages interrupteurs à basse tension

Country Status (5)

Country Link
US (1) US4681702A (fr)
EP (2) EP0118708B1 (fr)
JP (1) JPS59148215A (fr)
AT (2) ATE24628T1 (fr)
DE (3) DE3304637A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421758A1 (de) * 1984-06-12 1985-12-12 Siemens AG, 1000 Berlin und 8000 München Sinterkontaktwerkstoff fuer niederspannungsschaltgeraete der energietechnik und verfahren zu dessen herstellung
JPH06104873B2 (ja) * 1986-07-08 1994-12-21 富士電機株式会社 銀―金属酸化物系接点用材料及びその製造方法
WO1989009478A1 (fr) * 1988-03-26 1989-10-05 Doduco Gmbh + Co. Dr. Eugen Dürrwächter Produit semi-fini pour contacts electriques, constitue d'un materiau composite a base d'argent et d'oxyde d'etain, et procede de metallurgie des poudres pour sa fabrication
EP0369282B1 (fr) * 1988-11-17 1995-06-14 Siemens Aktiengesellschaft Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
EP0369283B1 (fr) * 1988-11-17 1994-09-14 Siemens Aktiengesellschaft Matériau de contact fritté pour appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
FR2639466B1 (fr) * 1988-11-22 1991-02-15 Telemecanique Procede de preparation d'un materiau de contact electrique et procede de fabrication d'un element de contact incorporant un tel materiau
US4952353A (en) * 1989-12-28 1990-08-28 Gte Laboratories Incorporated Hot isostatic pressing
EP0645049B1 (fr) * 1992-06-10 1996-04-03 DODUCO GMBH + Co Dr. Eugen DÀ¼rrwächter Matiere pour contacts electriques a base d'oxyde d'etain et d'argent ou d'oxyde de zinc et d'argent
DE19503182C1 (de) * 1995-02-01 1996-05-15 Degussa Sinterwerkstoff auf der Basis Silber-Zinnoxid für elektrische Kontakte und Verfahren zu dessen Herstellung
JP4892327B2 (ja) * 2006-11-29 2012-03-07 株式会社富士機械工作所 管体切断装置及び管体切断方法
DE102008056263A1 (de) 2008-11-06 2010-05-27 Ami Doduco Gmbh Verfahren zur Herstellung eines Halbzeugs und Halbzeug für elektrische Kontakte sowie Kontaktstück
DE102008056264A1 (de) 2008-11-06 2010-05-27 Ami Doduco Gmbh Verfahren zur Herstellung eines Halbzeugs und Halbzeug für elektrische Kontakte sowie Kontaktstück
CN104498764A (zh) * 2014-12-31 2015-04-08 靖江市海源有色金属材料有限公司 一种电接触材料及制备方法
EP3116009B1 (fr) * 2015-07-07 2019-08-28 Siemens Aktiengesellschaft Procédé pour la fabrication d'un contact électrique

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH588152A5 (fr) * 1972-12-11 1977-05-31 Siemens Ag
JPS50123519A (fr) * 1974-02-12 1975-09-29
GB1507854A (en) * 1974-04-01 1978-04-19 Mallory & Co Inc P R Electric contact materials
JPS51121795A (en) * 1975-04-17 1976-10-25 Nippon Tungsten Co Ltd Ag-tin oxide-system electric contact material
JPS596903B2 (ja) * 1975-05-21 1984-02-15 タナカキキンゾクコウギヨウ カブシキガイシヤ 複合電気接点材料
US4141727A (en) * 1976-12-03 1979-02-27 Matsushita Electric Industrial Co., Ltd. Electrical contact material and method of making the same
DE2659012C3 (de) * 1976-12-27 1980-01-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zum Herstellen eines Sinterkontaktwerkstoffes aus Silber und eingelagerten Metalloxiden
JPS608301B2 (ja) * 1977-01-21 1985-03-01 田中貴金属工業株式会社 Ａｇ−酸化物系複合接点材料の製造方法
JPS6018735B2 (ja) * 1977-12-15 1985-05-11 松下電器産業株式会社 電気接点材料
US4150982A (en) * 1978-03-13 1979-04-24 Chugai Denki Kogyo Kabushiki-Kaisha AG-Metal oxides electrical contact materials containing internally oxidized indium oxides and/or tin oxides
JPS6013051B2 (ja) * 1978-08-11 1985-04-04 中外電気工業株式会社 銀↓−錫↓−ビスマス系合金を内部酸化した電気接点材料の改良
JPS5543775A (en) * 1978-09-21 1980-03-27 Sumitomo Electric Industries Electric contact material and method of fabricating same
US4294616A (en) * 1979-01-02 1981-10-13 Gte Products Corporation Electrical contacts
GB2055398B (en) * 1979-08-01 1983-06-02 Chugai Electric Ind Co Ltd Electrical contact materials of internally oxidized ag-sn-bi alloy
JPS5760042A (en) * 1980-09-26 1982-04-10 Matsushita Electric Ind Co Ltd Electrical contact material
DE3102067A1 (de) * 1981-01-23 1982-08-19 Degussa Ag, 6000 Frankfurt Werkstoff fuer elektrische kontakte
JPS57134532A (en) * 1981-02-12 1982-08-19 Chugai Electric Ind Co Ltd Electrical contact material of silver-tin-bismuth alloy
DE3146972A1 (de) * 1981-11-26 1983-06-01 Siemens AG, 1000 Berlin und 8000 München Verfahren zum herstellen von formteilen aus cadmiumfreien silber-metalloxid-verbundwerkstoffen fuer elektrische kontaktstuecke
DE3305270A1 (de) * 1983-02-16 1984-08-16 Siemens AG, 1000 Berlin und 8000 München Sinterverbundwerkstoff fuer elektrische kontakte und verfahren zu seiner herstellung
EP0152606B1 (fr) * 1984-01-30 1987-09-09 Siemens Aktiengesellschaft Matériau de contact et procédé de préparation de pièces de contact

Also Published As

Publication number Publication date
ATE24628T1 (de) 1987-01-15
US4681702A (en) 1987-07-21
DE3304637A1 (de) 1984-08-16
ATE57789T1 (de) 1990-11-15
DE3461872D1 (en) 1987-02-05
EP0182386A2 (fr) 1986-05-28
EP0118708B1 (fr) 1986-12-30
DE3483479D1 (de) 1990-11-29
EP0118708A1 (fr) 1984-09-19
JPS59148215A (ja) 1984-08-24
JPH0377265B2 (fr) 1991-12-10
EP0182386A3 (en) 1987-01-14

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