EP 0804300 B1 19990506 - PROCESS AND DEVICE FOR PRODUCING A STEEL STRIP WITH THE PROPERTIES OF A COLD-ROLLED PRODUCT
Title (en)
PROCESS AND DEVICE FOR PRODUCING A STEEL STRIP WITH THE PROPERTIES OF A COLD-ROLLED PRODUCT
Title (de)
VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON STAHLBAND MIT KALTWALZEIGENSCHAFTEN
Title (fr)
PROCEDE ET DISPOSITIF DE PRODUCTION D'UNE FEUILLE D'ACIER PRESENTANT LES PROPRIETES D'UN PRODUIT LAMINE A FROID
Publication
Application
Priority
- DE 9501347 W 19950921
- DE 4438783 A 19941020
- DE 19520832 A 19950531
Abstract (en)
[origin: US5832985A] PCT No. PCT/DE95/01347 Sec. 371 Date Apr. 21, 1997 Sec. 102(e) Date Apr. 21, 1997 PCT Filed Sep. 21, 1995 PCT Pub. No. WO96/12573 PCT Pub. Date May 2, 1996A process for producing a steel strip with properties of a cold-rolled product. The process including comprising the sequential steps of: a) producing a thin slab 30 to 100 mm thick from a steel melt by continuous casting in a continuous casting machine, and, after a cast strip emerges from a mold of the continuous casting machine, cast rolling the cast strip with a liquid core to reduce thickness of the cast strip by at least 10%; b) descaling the thin slab produced according to step a); c) hot rolling the descaled thin slab at temperatures in a range of 1150 DEG to 900 DEG C. for reducing thickness by at least 50% to produce an intermediate strip with a maximum thickness of 20 mm; d) after hot rolling, accelerated cooling of the intermediate strip to a temperature in a range of 850 DEG to 600 DEG C.; e) rolling down the cooled intermediate strip by isothermic rolling at 850 DEG to 600 DEG C. on a finishing train with at least three stands into strips with a maximum thickness of 2 mm, whereby the strip thickness is reduced by at least 25% per roll pass; and f) subsequently cooling the isothermic rolled steel strip in accelerated fashion to a temperature no greater than 100 DEG C.
IPC 1-7
IPC 8 full level
B21B 1/46 (2006.01); B22D 11/128 (2006.01); C21D 8/02 (2006.01); B21B 1/26 (2006.01); B21B 1/34 (2006.01); B21B 45/00 (2006.01); B21B 45/02 (2006.01)
CPC (source: EP US)
B21B 1/463 (2013.01 - EP US); C21D 8/0215 (2013.01 - EP US); C21D 8/0226 (2013.01 - EP US); B21B 1/26 (2013.01 - EP US); B21B 1/34 (2013.01 - EP US); B21B 1/466 (2013.01 - EP US); B21B 45/004 (2013.01 - EP US); B21B 45/0218 (2013.01 - EP US); B21B 2201/04 (2013.01 - EP US); B21B 2201/12 (2013.01 - EP US); B21B 2201/14 (2013.01 - EP US); Y10T 29/49991 (2015.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB IT LI
DOCDB simple family (publication)
US 5832985 A 19981110; AT E179640 T1 19990515; AU 3561395 A 19960515; AU 686014 B2 19980129; CA 2202616 A1 19960502; CA 2202616 C 20010123; CN 1062196 C 20010221; CN 1161009 A 19971001; EP 0804300 A1 19971105; EP 0804300 B1 19990506; JP 3807628 B2 20060809; JP H11511696 A 19991012; WO 9612573 A1 19960502
DOCDB simple family (application)
US 81778497 A 19970421; AT 95932632 T 19950921; AU 3561395 A 19950921; CA 2202616 A 19950921; CN 95195695 A 19950921; DE 9501347 W 19950921; EP 95932632 A 19950921; JP 51357596 A 19950921