EP 0970256 A1 20000112 - HOT-ROLLING STEEL STRIP
Title (en)
HOT-ROLLING STEEL STRIP
Title (de)
WARMWALZEN VON STAHLBAND
Title (fr)
LAMINAGE A CHAUD DE FEUILLARD D'ACIER
Publication
Application
Priority
- DE 19712616 A 19970326
- EP 9801338 W 19980307
Abstract (en)
[origin: US6284069B1] The invention relates to a process for producing strips of homogenous structures and characteristics made of non-alloyed and low-alloyed steel by continuous hot rolling in several roll passes in the austenitic region and subsequently in the ferritic region, as well as coiling. The invention is characterised in that continuous-cast strip and/or strip rough rolled in the austenitic region, starting with a temperature T>=Ar3+30° C., with a total degree of deformation of eh>=30% is rolled in two or several roll passes in the austenitic region and in that the rolling stock is intensively cooled after every roll pass until the ferritic transformation has been completed, after which the rolling stock is end rolled to final thickness in the ferritic range in several passes with a total degree of deformation eh>=60%.
IPC 1-7
IPC 8 full level
B21B 1/26 (2006.01); B21B 3/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); B21B 1/46 (2006.01)
CPC (source: EP KR US)
B21B 1/26 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP KR US); C21D 8/0231 (2013.01 - EP US); C21D 8/0236 (2013.01 - KR); C21D 8/0273 (2013.01 - KR); C21D 9/54 (2013.01 - KR); C22C 38/001 (2013.01 - KR); C22C 38/02 (2013.01 - KR); C22C 38/04 (2013.01 - KR); B21B 1/46 (2013.01 - EP US); B21B 2201/02 (2013.01 - EP US); B21B 2201/04 (2013.01 - EP US); B21B 2201/16 (2013.01 - EP US); C21D 2211/001 (2013.01 - KR); C21D 2211/005 (2013.01 - KR)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6284069 B1 20010904; AT E199101 T1 20010215; AU 6728698 A 19981020; AU 728353 B2 20010104; CA 2284635 A1 19981001; DE 19712616 A1 19981001; DE 19712616 C2 19990715; DE 59800464 D1 20010315; EP 0970256 A1 20000112; EP 0970256 B1 20010207; ES 2155285 T3 20010501; GR 3035532 T3 20010629; JP 2001520707 A 20011030; KR 100506541 B1 20050808; KR 20010005742 A 20010115; WO 9842881 A1 19981001
DOCDB simple family (application)
US 38189299 A 19991228; AT 98912456 T 19980307; AU 6728698 A 19980307; CA 2284635 A 19980307; DE 19712616 A 19970326; DE 59800464 T 19980307; EP 9801338 W 19980307; EP 98912456 A 19980307; ES 98912456 T 19980307; GR 20010400371 T 20010308; JP 54480498 A 19980307; KR 19997008813 A 19990927