EP2191921A3 - Process for producing a copper-chromium contact element for medium-voltage switchgear assemblies, and contact element itself - Google Patents

Process for producing a copper-chromium contact element for medium-voltage switchgear assemblies, and contact element itself Download PDF

Info

Publication number
EP2191921A3
EP2191921A3 EP08020271A EP08020271A EP2191921A3 EP 2191921 A3 EP2191921 A3 EP 2191921A3 EP 08020271 A EP08020271 A EP 08020271A EP 08020271 A EP08020271 A EP 08020271A EP 2191921 A3 EP2191921 A3 EP 2191921A3
Authority
EP
European Patent Office
Prior art keywords
contact element
copper
producing
medium
voltage switchgear
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
EP08020271A
Other languages
German (de)
French (fr)
Other versions
EP2191921B1 (en
EP2191921A2 (en
Inventor
Dietmar Dr.-Ing. Gentsch
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.)
ABB Technology AG
Original Assignee
ABB Technology 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
Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to EP08020271A priority Critical patent/EP2191921B1/en
Priority to PCT/EP2009/008194 priority patent/WO2010057619A2/en
Publication of EP2191921A2 publication Critical patent/EP2191921A2/en
Publication of EP2191921A3 publication Critical patent/EP2191921A3/en
Application granted granted Critical
Publication of EP2191921B1 publication Critical patent/EP2191921B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
    • H01H1/0206—Contacts characterised by the material thereof specially adapted for vacuum switches containing as major components Cu and Cr
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/065—Spherical particles
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/17—Metallic particles coated with metal
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Powder Metallurgy (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Contacts (AREA)

Abstract

The invention relates to a process for producing a contact element for medium-voltage switchgear assemblies, and also to the contact element itself, in accordance with the preamble of claims 1 and 6. In order, in this case, to considerably lessen the abrasive effect which occurs during operation when the contact element is finished, and therefore to make the contact element more durable, the invention proposes that the chromium particles in the powder mixture are surface-rounded in advance by ball milling and/or by coating the particles with copper.
EP08020271A 2008-11-21 2008-11-21 Process for producing a copper-chromium contact element for medium-voltage switchgear assemblies Not-in-force EP2191921B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08020271A EP2191921B1 (en) 2008-11-21 2008-11-21 Process for producing a copper-chromium contact element for medium-voltage switchgear assemblies
PCT/EP2009/008194 WO2010057619A2 (en) 2008-11-21 2009-11-18 Process for producing a contact element for medium-voltage switchgear assemblies, and also contact element itself

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08020271A EP2191921B1 (en) 2008-11-21 2008-11-21 Process for producing a copper-chromium contact element for medium-voltage switchgear assemblies

Publications (3)

Publication Number Publication Date
EP2191921A2 EP2191921A2 (en) 2010-06-02
EP2191921A3 true EP2191921A3 (en) 2011-05-04
EP2191921B1 EP2191921B1 (en) 2013-01-09

Family

ID=40823018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08020271A Not-in-force EP2191921B1 (en) 2008-11-21 2008-11-21 Process for producing a copper-chromium contact element for medium-voltage switchgear assemblies

Country Status (2)

Country Link
EP (1) EP2191921B1 (en)
WO (1) WO2010057619A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878366B (en) * 2014-04-16 2016-07-06 湖南大学 Copper clad chromium composite powder and its preparation method and application
CN106312055B (en) * 2016-08-31 2018-06-05 陕西斯瑞新材料股份有限公司 Copper-clad evanohm powder and its copper chromium contact preparation method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785801A (en) * 1968-03-01 1974-01-15 Int Nickel Co Consolidated composite materials by powder metallurgy
DD209317A1 (en) * 1982-09-02 1984-04-25 Bernd Deja CONTACT MATERIAL FOR VACUUM SWITCHES AND METHOD OF MANUFACTURE
EP0469578A2 (en) * 1990-08-02 1992-02-05 Kabushiki Kaisha Meidensha Electrical contact material
EP0538896A2 (en) * 1991-10-25 1993-04-28 Kabushiki Kaisha Meidensha Process for forming contact material
US5689796A (en) * 1995-07-18 1997-11-18 Citizen Watch Co., Ltd. Method of manufacturing molded copper-chromium family metal alloy article
US5853083A (en) * 1995-12-28 1998-12-29 Fuji Electric Co., Ltd. Contact material for a vacuum circuit breaker and a method for manufacturing the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785801A (en) * 1968-03-01 1974-01-15 Int Nickel Co Consolidated composite materials by powder metallurgy
DD209317A1 (en) * 1982-09-02 1984-04-25 Bernd Deja CONTACT MATERIAL FOR VACUUM SWITCHES AND METHOD OF MANUFACTURE
EP0469578A2 (en) * 1990-08-02 1992-02-05 Kabushiki Kaisha Meidensha Electrical contact material
EP0538896A2 (en) * 1991-10-25 1993-04-28 Kabushiki Kaisha Meidensha Process for forming contact material
US5689796A (en) * 1995-07-18 1997-11-18 Citizen Watch Co., Ltd. Method of manufacturing molded copper-chromium family metal alloy article
US5853083A (en) * 1995-12-28 1998-12-29 Fuji Electric Co., Ltd. Contact material for a vacuum circuit breaker and a method for manufacturing the same

Also Published As

Publication number Publication date
WO2010057619A3 (en) 2011-09-22
WO2010057619A2 (en) 2010-05-27
EP2191921B1 (en) 2013-01-09
EP2191921A2 (en) 2010-06-02

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