EP 1048375 B1 20161228 - Method for forming a copper blank by cold extrusion
Title (en)
Method for forming a copper blank by cold extrusion
Title (de)
Verfahren zur Umformung eines Kupfer-Rohlings durch Kaltfliesspressen
Title (fr)
Procédé de formage d'une ebauche en cuivre par extrusion à froid
Publication
Application
Priority
DE 19920040 A 19990423
Abstract (en)
[origin: EP1048375A2] The cold forming method has a Cu workpiece with a volume corresponding to that of the required end electrode separated from wire with a diameter of 4.5 mm and clamped between a stationary forming matrix (10,11) and a relatively displaced forming stamp (30), moved in the direction of the matrix via a 2-stage forming process. An Independent claim for a cold forming tool is also included.
IPC 8 full level
B21K 1/14 (2006.01); B21C 23/20 (2006.01); B21J 5/02 (2006.01)
CPC (source: EP)
B21C 23/20 (2013.01); B21J 5/02 (2013.01); B21K 1/14 (2013.01); B21K 23/04 (2013.01); H01T 21/00 (2013.01)
Citation (examination)
US 2593126 A 19520415 - ESTOK PAUL A
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1048375 A2 20001102; EP 1048375 A3 20081022; EP 1048375 B1 20161228; DE 19920040 A1 20001102; DE 19964418 B4 20060608; EP 2161085 A2 20100310; EP 2161085 A3 20171004
DOCDB simple family (application)
EP 00108684 A 20000420; DE 19920040 A 19990423; DE 19964418 A 19990423; EP 09180659 A 20000420