EP 1169486 B1 20030502 - METHOD OF PRODUCING A HOT-ROLLED STRIP
Title (en)
METHOD OF PRODUCING A HOT-ROLLED STRIP
Title (de)
VERFAHREN ZUM ERZEUGEN EINES WARMBANDES
Title (fr)
PROCEDE DE PRODUCTION DE FEUILLARD A CHAUD
Publication
Application
Priority
- DE 19911287 A 19990313
- EP 0001517 W 20000224
Abstract (en)
[origin: US6855218B1] The invention relates to a method for producing hot strip which features good forming ability and increased strength. This is achieved in that a hot strip (W) which is produced in particular from continuous casting in the shape of reheated slabs or slabs obtained directly from the casting heat, from thin slabs or cast strip, based on a steel comprising (in mass %) C: 0.001-1.05%; Si: <=1.5%; Mn: 0.05-3.5%; Al: <=2.5%, if necessary further elements such as Cu, Ni, Mo, N, Ti, Nb, V, Zn, B, P, Cr, Ca and/or S, with the remainder being iron as well as the usual accompanying elements, is continuously finish rolled and subsequently continuously cooled, with cooling taking place in at least two subsequent cooling phases (tCK, tLK) of accelerated cooling, to a final temperature; with the first cooling phase (tCK) of accelerated cooling starting at the latest three seconds after the last pass of finish rolling; and with the hot strip (W) during the first cooling phase (tCK) of accelerated cooling being cooled at a cooling rate of at least 150° C./s.
IPC 1-7
IPC 8 full level
B21B 3/00 (2006.01); C21D 1/19 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/58 (2006.01); B21B 1/46 (2006.01); B21B 37/76 (2006.01); C21D 9/573 (2006.01)
CPC (source: EP US)
C21D 8/0226 (2013.01 - EP US); B21B 1/46 (2013.01 - EP US); B21B 37/76 (2013.01 - EP US); C21D 1/19 (2013.01 - EP US); C21D 8/0263 (2013.01 - EP US); C21D 9/573 (2013.01 - EP US)
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)
US 6855218 B1 20050215; AT E239097 T1 20030515; DE 19911287 C1 20000831; DE 50001976 D1 20030605; EP 1169486 A1 20020109; EP 1169486 B1 20030502; ES 2195867 T3 20031216; JP 2002539330 A 20021119; WO 0055381 A1 20000921
DOCDB simple family (application)
US 93638101 A 20011221; AT 00906372 T 20000224; DE 19911287 A 19990313; DE 50001976 T 20000224; EP 0001517 W 20000224; EP 00906372 A 20000224; ES 00906372 T 20000224; JP 2000605797 A 20000224