EP 2268427 A1 20110105 - OPERATING METHOD FOR A COLD-ROLLING LINE WITH IMPROVED DYNAMICS
Title (en)
OPERATING METHOD FOR A COLD-ROLLING LINE WITH IMPROVED DYNAMICS
Title (de)
BETRIEBSVERFAHREN FÜR EINE KALTWALZSTRASSE MIT VERBESSERTER DYNAMIK
Title (fr)
PROCÉDÉ D'EXPLOITATION POUR UN TRAIN DE LAMINOIR À FROID AVEC DYNAMIQUE AMÉLIORÉE
Publication
Application
Priority
- EP 2009052697 W 20090309
- DE 102008014304 A 20080314
Abstract (en)
[origin: WO2009112443A1] In a multi-staged cold-rolling line, a strip (5) is rolled. An actual rolling force (F) of a last rolling stage (4) of the cold-rolling line is detected using a rolling force detection apparatus (14) and fed to a force control unit (15). The force control unit (15) determines at least one control parameter (dsl*, dv'*) using the actual rolling force (F) and a target rolling force (F*) fed to it and outputs the at least one control parameter. An actual thickness (d) of the strip (5) is detected using a thickness measurement unit (10) directly downstream of the last rolling stage (4) of the cold-rolling line and this thickness is sent to a thickness control unit (11). The thickness control unit (11) acts on the last rolling stage (4) of the cold-rolling line. Another actual thickness (d') of the strip (5) is detected using another thickness measurement unit (16) directly upstream of the last rolling stage (4) of the cold-rolling line. Speeds (v', v) at which the strip (5) enters the last rolling stage (4) of the cold-rolling line and exits the last rolling stage (4) of the cold-rolling line are detected using speed detection units (19, 20). The detected speeds (v', v) and a pre-determined final thickness (d*) which the strip (5) should have following the last rolling stage (4) of the cold-rolling line are fed to a setpoint determination unit (18). The setpoint determination unit (18) determines a target thickness (d'*) as a function of the parameters (v', v, d*, d) fed to it. Another thickness control unit (H') acting on the next to last rolling stage (3) of the cold-rolling line receives the target thickness (d'*) as a setpoint (d'*) and the other actual thickness (d') as an actual value (d').
IPC 8 full level
B21B 37/16 (2006.01)
CPC (source: EP US)
B21B 37/165 (2013.01 - EP US); B21B 37/46 (2013.01 - EP US); B21B 37/48 (2013.01 - EP US); B21B 37/62 (2013.01 - EP US); B21B 37/66 (2013.01 - EP US); B21B 2275/06 (2013.01 - EP US)
Citation (search report)
See references of WO 2009112443A1
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2009112443 A1 20090917; BR PI0909292 A2 20190924; CN 101970140 A 20110209; CN 101970140 B 20131030; DE 102008014304 A1 20090924; EP 2268427 A1 20110105; EP 2268427 B1 20130130; PL 2268427 T3 20130731; RU 2010141991 A 20120420; RU 2500494 C2 20131210; US 2011011143 A1 20110120; US 8516869 B2 20130827
DOCDB simple family (application)
EP 2009052697 W 20090309; BR PI0909292 A 20090309; CN 200980109089 A 20090309; DE 102008014304 A 20080314; EP 09718646 A 20090309; PL 09718646 T 20090309; RU 2010141991 A 20090309; US 92050809 A 20090309