EP0182386A2 - Procédé de fabrication de pièces de contact - Google Patents

Procédé de fabrication de pièces de contact Download PDF

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Publication number
EP0182386A2
EP0182386A2 EP85114864A EP85114864A EP0182386A2 EP 0182386 A2 EP0182386 A2 EP 0182386A2 EP 85114864 A EP85114864 A EP 85114864A EP 85114864 A EP85114864 A EP 85114864A EP 0182386 A2 EP0182386 A2 EP 0182386A2
Authority
EP
European Patent Office
Prior art keywords
contact
cuo
sno
cdo
content
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.)
Granted
Application number
EP85114864A
Other languages
German (de)
English (en)
Other versions
EP0182386B1 (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
Family has litigation
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(A2) "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 contact material for low-voltage switching devices in energy technology made of AgSnO, Bi, O, CuO and to an associated method for producing contact pieces from this material.
  • contact materials based on AgCdO with Cd0 as the main active component have proven to be particularly advantageous. These contact materials show a small erosion in the arc, a low welding force and a low heating with continuous current supply.
  • a contact material which, by oxidation of a plated alloy sheet with 3 to 15 wt.% Tin, 0.01 to 1 wt.% Bismuth and 0.1 to 8.5 wt.% Cu is made.
  • an electrical contact material based on silver metal oxide is known from DE-A-2754335, 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, should be present .
  • 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 design the known AgSnO, Bi, 0, CuO materials such that the production of contact pieces can be done economically.
  • the object is achieved in that the material is a sintered material produced by powder metallurgy from an internally oxidized alloy powder.
  • the total metal oxide content of SnO 2 , Bi, O and Cu0 is preferably between 10 and 25% by volume with a SnO 2 content ⁇ 70% by volume of the total amount of oxide, the total metal oxide content consisting of SnO 2 , Bi, O and CuO , can advantageously be between 15 to 20 vol .-%.
  • an alloy powder is produced from an AgSnBiCu alloy of a given composition by pressure atomization with water, after drying a powder fraction ⁇ 200 ⁇ m is sieved and internally oxidized in air, so that a composite powder made of AgSnO 2 Bi 2 O 3 CuO arises from which contact pieces are produced by pressing in a die with 600 MPa, which are sintered at 800 ° C for one hour and further compressed by hot pressing at approx. 650 ° C with 800 MPa. Further sintering at approximately 850 ° C. for one hour and cold compression may preferably follow.
  • Example Manufacture of a sintered contact material from AgSnO 2 Bi 2 O 3 CuO 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 therefrom by pressure atomization with water. After drying, the powder fraction of less than 200 ⁇ m is sieved off. This fraction is internally oxidized in air between 500 and 800 ° C., after which a composite powder. from AgSnO 2 Bi 2 O 3 CuO of the composition 87.95% mass content Ag, 9.97% mass content SnO 2 , 0.98% mass content Bi, O and 1.10% mass content Cu0.
  • 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 cold compression.
  • the contact properties of such contact pieces were measured on a test switch.
  • the burn-up values were about 25% better than an extruded AgSnO 2 grade with the same oxide content.
  • Fs99.9 values were 50% lower 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)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Contacts (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Switches (AREA)
  • Conductive Materials (AREA)
  • Mechanisms For Operating Contacts (AREA)
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 true EP0182386A2 (fr) 1986-05-28
EP0182386A3 EP0182386A3 (en) 1987-01-14
EP0182386B1 EP0182386B1 (fr) 1990-10-24

Family

ID=6190546

Family Applications (2)

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

Family Applications After (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) EP0182386B1 (fr)
JP (1) JPS59148215A (fr)
AT (2) ATE24628T1 (fr)
DE (3) DE3304637A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0369282A2 (fr) * 1988-11-17 1990-05-23 Siemens Aktiengesellschaft Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
EP0369283A2 (fr) * 1988-11-17 1990-05-23 Siemens Aktiengesellschaft Matériau de contact fritté pour appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
WO1993026021A1 (fr) * 1992-06-10 1993-12-23 Doduco Gmbh + Co. Matiere pour contacts electriques a base d'oxyde d'etain et d'argent ou d'oxyde de zinc et d'argent

Families Citing this family (10)

* 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
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
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754335A1 (de) * 1976-12-03 1978-06-08 Matsushita Electric Ind Co Ltd Elektrischer kontaktwerkstoff und verfahren zu dessen herstellung
FR2433054A1 (fr) * 1978-08-11 1980-03-07 Chugai Electric Ind Co Ltd Alliages d'ag-sn-bi a oxydation interne pour contacts electriques ameliores
GB2055398A (en) * 1979-08-01 1981-03-04 Chugai Electric Ind Co Ltd Electrical contact materials of internally oxidized Ag-Sn-Bi alloy
EP0056857A1 (fr) * 1981-01-23 1982-08-04 Degussa Aktiengesellschaft Matériau pour contacts électriques
EP0080641A1 (fr) * 1981-11-26 1983-06-08 Siemens Aktiengesellschaft Procédé de fabrication de pièces en matériaux composés d'argent et d'oxyde métallique sans cadmium pour contacts électriques

Family Cites Families (15)

* 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
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
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
JPS5760042A (en) * 1980-09-26 1982-04-10 Matsushita Electric Ind Co Ltd Electrical contact material
JPS57134532A (en) * 1981-02-12 1982-08-19 Chugai Electric Ind Co Ltd Electrical contact material of silver-tin-bismuth alloy
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754335A1 (de) * 1976-12-03 1978-06-08 Matsushita Electric Ind Co Ltd Elektrischer kontaktwerkstoff und verfahren zu dessen herstellung
FR2433054A1 (fr) * 1978-08-11 1980-03-07 Chugai Electric Ind Co Ltd Alliages d'ag-sn-bi a oxydation interne pour contacts electriques ameliores
GB2055398A (en) * 1979-08-01 1981-03-04 Chugai Electric Ind Co Ltd Electrical contact materials of internally oxidized Ag-Sn-Bi alloy
EP0056857A1 (fr) * 1981-01-23 1982-08-04 Degussa Aktiengesellschaft Matériau pour contacts électriques
EP0080641A1 (fr) * 1981-11-26 1983-06-08 Siemens Aktiengesellschaft Procédé de fabrication de pièces en matériaux composés d'argent et d'oxyde métallique sans cadmium pour contacts électriques

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5360673A (en) * 1988-03-26 1994-11-01 Doduco Gmbh + Co. Dr. Eugen Durrwachter Semifinished product for electric contacts made of a composite material based on silver-tin oxide and powdermetallurgical process of making said product
EP0369282A2 (fr) * 1988-11-17 1990-05-23 Siemens Aktiengesellschaft Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
EP0369283A2 (fr) * 1988-11-17 1990-05-23 Siemens Aktiengesellschaft Matériau de contact fritté pour appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
EP0369282A3 (fr) * 1988-11-17 1991-03-13 Siemens Aktiengesellschaft Matériau de contact fritté dans appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
EP0369283A3 (fr) * 1988-11-17 1991-03-13 Siemens Aktiengesellschaft Matériau de contact fritté pour appareillages interrupteurs à basse tension de la technique de l'énergie, spécialement pour des contacteurs
WO1993026021A1 (fr) * 1992-06-10 1993-12-23 Doduco Gmbh + Co. Matiere pour contacts electriques a base d'oxyde d'etain et d'argent ou d'oxyde de zinc et d'argent
US5610347A (en) * 1992-06-10 1997-03-11 Doduco Gmbh & Co. Dr. Eugen Durrwachter Material for electric contacts taking silver-tin oxide or silver-zinc oxide as basis
CN1036099C (zh) * 1992-06-10 1997-10-08 欧根·迪尔瓦克特博士多杜科股份公司 以银-氧化锡或银-氧化锌为基础的电接触材料

Also Published As

Publication number Publication date
US4681702A (en) 1987-07-21
DE3304637A1 (de) 1984-08-16
DE3461872D1 (en) 1987-02-05
EP0182386B1 (fr) 1990-10-24
JPS59148215A (ja) 1984-08-24
ATE57789T1 (de) 1990-11-15
EP0118708B1 (fr) 1986-12-30
EP0182386A3 (en) 1987-01-14
EP0118708A1 (fr) 1984-09-19
JPH0377265B2 (fr) 1991-12-10
DE3483479D1 (de) 1990-11-29
ATE24628T1 (de) 1987-01-15

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