EP 2191921 A3 20110504 - Process for producing a copper-chromium contact element for medium-voltage switchgear assemblies, and contact element itself
Title (en)
Process for producing a copper-chromium contact element for medium-voltage switchgear assemblies, and contact element itself
Title (de)
Verfahren zur Herstellung eines Kupfer-Chrom Kontaktelements für Schaltgetriebeanordnungen mittlerer Spannung und Kontaktelement
Title (fr)
Procédé de production d'un élément de cuivre et chrome de contact pour des ensembles d'appareil de commutation à moyenne tension, et élément de contact
Publication
Application
Priority
EP 08020271 A 20081121
Abstract (en)
[origin: EP2191921A2] 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.
IPC 8 full level
B22F 1/065 (2022.01); B22F 1/17 (2022.01); C22C 1/04 (2006.01); H01H 33/66 (2006.01)
CPC (source: EP US)
B22F 1/065 (2022.01 - EP US); B22F 1/17 (2022.01 - EP US); H01H 1/0206 (2013.01 - EP US); B22F 2998/10 (2013.01 - EP)
Citation (search report)
- [X] DD 209317 A1 19840425 - DEJA BERND, et al
- [X] EP 0538896 A2 19930428 - MEIDENSHA ELECTRIC MFG CO LTD [JP]
- [X] EP 0469578 A2 19920205 - MEIDENSHA ELECTRIC MFG CO LTD [JP], et al
- [X] US 5853083 A 19981229 - FURUSAWA MASAYUKI [JP], et al
- [A] US 5689796 A 19971118 - KASAI TAKAO [JP], et al
- [A] US 3785801 A 19740115 - BENJAMIN J
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2191921 A2 20100602; EP 2191921 A3 20110504; EP 2191921 B1 20130109; WO 2010057619 A2 20100527; WO 2010057619 A3 20110922
DOCDB simple family (application)
EP 08020271 A 20081121; EP 2009008194 W 20091118