EP 4247574 A1 20230927 - METHOD FOR ADJUSTING THE PROPERTIES OF A HOT-ROLLED STRIP HAVING A SPECIFIC CHEMICAL COMPOSITION IN A HOT STRIP MILL
Title (en)
METHOD FOR ADJUSTING THE PROPERTIES OF A HOT-ROLLED STRIP HAVING A SPECIFIC CHEMICAL COMPOSITION IN A HOT STRIP MILL
Title (de)
VERFAHREN ZUR EINSTELLUNG DER EIGENSCHAFTEN EINES WARMBANDES MIT EINER BESTIMMTEN CHEMISCHEN ZUSAMMENSETZUNG IN EINER WARMBANDSTRAßE
Title (fr)
PROCÉDÉ DE CORRECTION DES PROPRIÉTÉS D'UNE BANDE LAMINÉE À CHAUD AYANT UNE COMPOSITION CHIMIQUE SPÉCIFIQUE DANS UN LAMINOIR À CHAUD
Publication
Application
Priority
- DE 102020214643 A 20201120
- EP 2021082563 W 20211122
Abstract (en)
[origin: WO2022106707A1] The invention relates to a method for adjusting at least one property, in particular the grain size and/or the recrystallization behavior, of a hot-rolled strip in a hot strip mill. The aim of the invention is to allow predefined target values to be achieved for the hot-rolled strip with smaller tolerances. This aim is achieved in that, in accordance with the method according to the invention, the actual values for the property of the hot-rolled strip are determined continuously during the hot-rolling process in the hot strip mill. In addition, a process model connected to a higher-level open-loop or closed-loop control system of the hot strip mill determines at least one hot-rolled strip deviation (x) between the continuously determined actual value and the specified target value for the at least one property of the hot-rolled strip and/or determines at least one roll deviation between the actual value measured during the hot-rolling process and the specified target value of the hot-rolling process. In addition, the process model determines modified new target values for the hot-rolling process on the basis of the hot-rolled strip deviation and/or the roll deviation and while taking into account the material- and system-related possibilities and transfers these values to the open-loop or closed-loop control system of the units involved in the hot-rolling process.
IPC 8 full level
B21B 37/00 (2006.01); B21B 37/74 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C21D 11/00 (2006.01)
CPC (source: EP)
C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C21D 9/46 (2013.01); C21D 11/00 (2013.01)
Citation (search report)
See references of WO 2022106707A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022106707 A1 20220527; DE 102020214643 A1 20220525; EP 4247574 A1 20230927
DOCDB simple family (application)
EP 2021082563 W 20211122; DE 102020214643 A 20201120; EP 21823198 A 20211122