EP 3890900 B1 20230412 - METHOD FOR OPERATING A ROLL STAND FOR STEPPED ROLLING
Title (en)
METHOD FOR OPERATING A ROLL STAND FOR STEPPED ROLLING
Title (de)
VERFAHREN ZUM BETREIBEN EINES WALZGERÜSTES ZUM STUFENWALZEN
Title (fr)
PROCÉDÉ SERVANT À FAIRE FONCTIONNER UNE CAGE DE LAMINOIR DE LAMINAGE À GRADINS
Publication
Application
Priority
- DE 102018221153 A 20181206
- DE 102019202237 A 20190219
- DE 102019215265 A 20191002
- EP 2019083331 W 20191202
Abstract (en)
[origin: WO2020114976A1] The invention relates to a method for operating a roll stand for stepped rolling of a metal strip (200). According to the method the metal strip (200) is firstly introduced on the infeed side into a roll stand (100) and there undergoes stepped rolling. An upstream and a downstream portion (220, 210) of the metal strip are thus created and have a different thickness from one another. The difference in thickness is Ahi. After the roll stand, the stepped-rolled metal strip passes firstly through an outfeed-side strip store before it is wound into a coil with the aid of a winding reel. The outfeed-side reel is regulated to a constant strip tension. In order to be able to keep the outfeed-side strip tension sufficiently constant even in the event of rapid changes to the size of the rolling gap and resultant rapid changes in thickness in the rolled metal strip, according to the invention, the regulation of the strip tension with the aid of the winding reel is complemented by position regulation for a roller unit in the outfeed-side strip store.
IPC 8 full level
B21B 37/26 (2006.01)
CPC (source: EP US)
B21B 37/26 (2013.01 - EP); B21B 37/54 (2013.01 - US); B21B 39/084 (2013.01 - US); B21B 37/54 (2013.01 - EP); B21B 39/084 (2013.01 - EP)
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
DOCDB simple family (publication)
DE 102019215265 A1 20200610; CN 113226580 A 20210806; CN 113226580 B 20240319; EP 3890900 A1 20211013; EP 3890900 B1 20230412; JP 2022510024 A 20220125; JP 7220790 B2 20230210; US 11701695 B2 20230718; US 2021316347 A1 20211014; WO 2020114976 A1 20200611
DOCDB simple family (application)
DE 102019215265 A 20191002; CN 201980079662 A 20191202; EP 19816591 A 20191202; EP 2019083331 W 20191202; JP 2021531969 A 20191202; US 201917299820 A 20191202