Global Patent Index - EP 1624982 B2

EP 1624982 B2 20110615 - METHOD FOR REGULATING THE TEMPERATURE OF A METAL STRIP, ESPECIALLY FOR ROLLING A METAL HOT STRIP IN A FINISHING TRAIN

Title (en)

METHOD FOR REGULATING THE TEMPERATURE OF A METAL STRIP, ESPECIALLY FOR ROLLING A METAL HOT STRIP IN A FINISHING TRAIN

Title (de)

VERFAHREN ZUR REGELUNG DER TEMPERATUR EINES METALLBANDES, INSBESONDERE IN EINER FERTIGSTRASSE ZUM WALZEN VON METALLWARMBAND

Title (fr)

PROCEDE DE REGULATION DE LA TEMPERATURE D'UNE BANDE METALLIQUE, EN PARTICULIER DANS UN TRAIN FINISSEUR POUR LE LAMINAGE A CHAUD DE BANDES METALLIQUES

Publication

EP 1624982 B2 20110615 (DE)

Application

EP 04710836 A 20040213

Priority

  • EP 2004001366 W 20040213
  • DE 10308222 A 20030225
  • DE 10321791 A 20030514

Abstract (en)

[origin: WO2004076086A2] The invention relates to a method for controlling and regulating the temperature of a metal strip (6) in a finishing train (3) of a hot rolling mill. A target function is formed by comparing a desired temperature gradient with an actual temperature gradient. The target function measures deviations from desired indications positioned in various places on the finishing train. The speed of the strip and the flow of the cooling agent are adjusted by predicting with the aid of a method of non-linear optimisation with auxiliary conditions and are regulated and controlled online by solving a quadratic optimisation problem with linear auxiliary conditions, preferably with the aid of an active set strategy.

IPC 8 full level

B21B 37/74 (2006.01)

CPC (source: EP)

B21B 37/74 (2013.01); C21D 11/00 (2013.01); C21D 11/005 (2013.01)

Citation (opposition)

Opponent :

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2004076086 A2 20040910; WO 2004076086 A3 20041118; AT 360483 T 20070515; DE 502004003617 D1 20070606; EP 1624982 A2 20060215; EP 1624982 B1 20070425; EP 1624982 B2 20110615; JP 2006518670 A 20060817; NO 20054156 L 20050907; US 2006156773 A1 20060720; US 7310981 B2 20071225

DOCDB simple family (application)

EP 2004001366 W 20040213; AT 04710836 T 20040213; DE 502004003617 T 20040213; EP 04710836 A 20040213; JP 2006501837 A 20040213; NO 20054156 A 20050907; US 54578105 A 20050816