EP 2089552 B1 20170125 - METHOD FOR THE CONTINUOUS PRODUCTION OF STEEL WIRE OR BAR
Title (en)
METHOD FOR THE CONTINUOUS PRODUCTION OF STEEL WIRE OR BAR
Title (de)
VERFAHREN ZUR KONTINUIERLICHEN HERSTELLUNG VON DRAHT- ODER STABSTAHL
Title (fr)
PROCÉDÉ DE PRODUCTION EN CONTINU DE FILS D'ACIER OU DE BARRES D'ACIER
Publication
Application
Priority
- CH 2007000558 W 20071112
- CH 18482006 A 20061117
Abstract (en)
[origin: WO2008058410A1] The invention relates to a method for the continuous production of steel wire or bar, wherein a first hot-forming is carried out by rolling at a temperature above the recrystallization temperature, and wherein the overall degree of forming during the first hot-forming is at least 60%. Next, the rolled steel is cooled to below the recrystallization temperature, and then a final forming takes place at a temperature in the range of the non-recrystallized austenite. The cooldown is carried out in a manner that inhibits a potential growth of grains in the austenite rolled steel before the final forming. The overall degree of forming during the final forming is at least 30%. Finally, the rolled steel is cooled down to a predetermined heat holding temperature at the Ar<SUB>1</SUB>temperature and left at said temperature for a predetermined heat holding time.
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/06 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01)
CPC (source: EP)
C21D 8/06 (2013.01); C22C 38/001 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008058410 A1 20080522; EP 2089552 A1 20090819; EP 2089552 B1 20170125; ES 2623430 T3 20170711; PL 2089552 T3 20170731
DOCDB simple family (application)
CH 2007000558 W 20071112; EP 07816241 A 20071112; ES 07816241 T 20071112; PL 07816241 T 20071112