EP 1147235 A1 20011024 - METHOD FOR MAKING A COLD ROLLED STEEL STRIP FOR DEEP-DRAWING
Title (en)
METHOD FOR MAKING A COLD ROLLED STEEL STRIP FOR DEEP-DRAWING
Title (de)
VERFAHREN ZUM HERSTELLEN VON KALTGEWALZTEM STAHLBAND ZUM TIEFZIEHEN
Title (fr)
PROCEDE DE FABRICATION D'UNE BANDE D'ACIER LAMINEE A FROID POUR EMBOUTISSAGE PROFOND
Publication
Application
Priority
- BE 0000114 W 20001003
- BE 9900676 A 19991013
Abstract (en)
[origin: WO0127340A1] The invention concerns a method for making a low carbon and low manganese cold rolled steel strip for deep-drawing whereby a steel strip hot rolled in the austenistic region coiled at the end of the high temperature hot rolling process (680 DEG C < T < 750 DEG C) is subjected to a cold rolling process with a reduction rate between 65 and 80 %, and finally subjected to an annealing and overageing heat treatment. It consists in heating the steel strip at a heating rate Vh ranging between 150 DEG C/s and 1000 DEG C up to the annealing temperature Ta ranging between 650 DEG C and 750 DEG C, and in maintaining it at said annealing temperature for a time interval between 1 and 20 seconds, then in cooling it at a cooling rate Vc between 100 DEG C/s and 500 DEG C/s up to an overageing temperature Toa ranging between 150 DEG C and 450 DEG C.
IPC 1-7
IPC 8 full level
C21D 8/04 (2006.01); C21D 9/48 (2006.01); C21D 1/26 (2006.01)
CPC (source: EP KR US)
C21D 1/26 (2013.01 - KR); C21D 8/0426 (2013.01 - KR); C21D 8/0436 (2013.01 - KR); C21D 8/0473 (2013.01 - EP US); C21D 9/48 (2013.01 - EP US); C21D 9/56 (2013.01 - KR); C22C 38/02 (2013.01 - KR); C22C 38/04 (2013.01 - KR); C22C 38/06 (2013.01 - KR); C22C 38/12 (2013.01 - KR); C22C 38/14 (2013.01 - KR); C21D 1/26 (2013.01 - EP US); C21D 2211/001 (2013.01 - KR)
Citation (search report)
See references of WO 0127340A1
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)
WO 0127340 A1 20010419; BE 1012934 A3 20010605; EP 1147235 A1 20011024; KR 20010080760 A 20010822; US 6638380 B1 20031028
DOCDB simple family (application)
BE 0000114 W 20001003; BE 9900676 A 19991013; EP 00969113 A 20001003; KR 20017007354 A 20010613; US 85649401 A 20010613