EP 3715000 B1 20220112 - PREVENTION OF WAVES IN THE ROLLING OF METAL STRIPS
Title (en)
PREVENTION OF WAVES IN THE ROLLING OF METAL STRIPS
Title (de)
VERMEIDUNG VON WELLEN BEIM WALZEN VON METALLBÄNDERN
Title (fr)
PROCÉDÉ PERMETTANT D'ÉVITER LES ONDULATIONS LORS DU LAMINAGE DES BANDES MÉTALLIQUES
Publication
Application
Priority
EP 19165536 A 20190327
Abstract (en)
[origin: WO2020193099A1] The invention relates to a control device (3b) for a roll stand (1), which control device receives, during rolling of a metal strip (2) in the roll stand (1), measurement data (M) for a lateral position (y) of the metal strip (2) on the inlet side and/or outlet side of the roll stand (1). A stand regulator (3a) of the control device (3b) determines, taking into account parameters (P) of the stand regulator (3a) on the basis of the deviation in the lateral position (y) from a target position (y*), a tilt value (δs) for the roll stand (1) and controls the roll stand (1) accordingly. The control device (3b) determines at least one variable (V1, V2, Q1, Q2) from which it is derived, for both strip edges (7, 8) of the metal strip (2), whether the metal strip (2) forms an undulation (9) in the region of the particular strip edge (7, 8). As soon as the metal strip (2) forms an undulation (9) in the region of one of the strip edges (7, 8), the control device (3b) varies at least one of the parameters (P) of the stand regulator (3a), such that the stand regulator (3a) determines the tilt value (δs), starting from the variation in the at least one parameter (P), taking into account the changed parameter (P).
IPC 8 full level
B21B 37/68 (2006.01)
CPC (source: EP US)
B21B 37/30 (2013.01 - US); B21B 37/58 (2013.01 - US); B21B 37/68 (2013.01 - EP US); B21B 38/02 (2013.01 - US); B21B 37/58 (2013.01 - EP); B21B 38/02 (2013.01 - EP); B21B 2263/04 (2013.01 - US); B21B 2263/06 (2013.01 - EP); B21B 2271/025 (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)
EP 3715000 A1 20200930; EP 3715000 B1 20220112; CN 113646102 A 20211112; CN 113646102 B 20230811; JP 2022526923 A 20220527; JP 7277604 B2 20230519; US 11858021 B2 20240102; US 2022250128 A1 20220811; WO 2020193099 A1 20201001
DOCDB simple family (application)
EP 19165536 A 20190327; CN 202080025270 A 20200305; EP 2020055886 W 20200305; JP 2021557146 A 20200305; US 202017598343 A 20200305