EP 2170551 A1 20100407 - METHOD FOR PRODUCING A WIRE FROM COPPER OR FROM A COPPER ALLOY BY MEANS OF EXTRUSION
Title (en)
METHOD FOR PRODUCING A WIRE FROM COPPER OR FROM A COPPER ALLOY BY MEANS OF EXTRUSION
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES DRAHTES AUS KUPFER ODER AUS EINER KUPFERLEGIERUNG MITTELS STRANGPRESSEN
Title (fr)
PROCÉDÉ DE FABRICATION D'UN FIL EN CUIVRE OU EN ALLIAGE DE CUIVRE PAR EXTRUSION
Publication
Application
Priority
- EP 2008059062 W 20080711
- DE 102007034093 A 20070721
Abstract (en)
[origin: CA2692344A1] The invention describes a continuous method for producing wires from copp er or from a copper alloy, wherein the copper or copper alloy is in the form of a cast billet (1) and is drawn at a temperature above 500°C into one or more finished wires with the aid of an extruder (2), in which a female die ( 4) and corresponding drawing dies are located, characterized by the followin g steps, a) protecting the hot wires (5) emerging from the female die (4) in a stretching zone (I) from oxidation by means of a shielding gas, b) coolin g the wires in a cooling zone (II) in a temperature-controlled water bath (6 ) at a temperature greater than 60°C, c) measuring the cross-sectional dimen sions of the wires after they leave the water bath and exerting a controlled tensile force on the wires, so that the deviations of the cross-sectional d imensions of the wires from a desired cross section are minimized by stretch ing the wires in the stretching zone (I), and d) placing the wires into a di vided drawing die (14) without prior swaging, closing the drawing die and dr awing the wires to the finished dimensions continuously until the cast bille t is used up.
IPC 8 full level
B23K 35/40 (2006.01); B21C 23/08 (2006.01)
CPC (source: EP US)
B21C 1/02 (2013.01 - EP US); B21C 1/12 (2013.01 - EP US); B21C 23/08 (2013.01 - EP US); B21C 31/00 (2013.01 - EP US); B23K 35/40 (2013.01 - EP US); Y10T 29/49117 (2015.01 - EP US)
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)
DE 102007034093 A1 20090122; DE 102007034093 B4 20090402; AR 067624 A1 20091014; AU 2008280307 A1 20090129; BR PI0814270 A2 20150331; CA 2692344 A1 20090129; CL 2008002091 A1 20090123; CN 101778694 A 20100714; EA 201000160 A1 20100830; EP 2170551 A1 20100407; JP 2010534138 A 20101104; KR 20100042626 A 20100426; MX 2010000701 A 20100407; PE 20090673 A1 20090618; US 2010192370 A1 20100805; WO 2009013150 A1 20090129; ZA 201000757 B 20101027
DOCDB simple family (application)
DE 102007034093 A 20070721; AR P080103146 A 20080721; AU 2008280307 A 20080711; BR PI0814270 A 20080711; CA 2692344 A 20080711; CL 2008002091 A 20080715; CN 200880025667 A 20080711; EA 201000160 A 20080711; EP 08786062 A 20080711; EP 2008059062 W 20080711; JP 2010517350 A 20080711; KR 20107001169 A 20080711; MX 2010000701 A 20080711; PE 2008001234 A 20080718; US 66862708 A 20080711; ZA 201000757 A 20100201