EP 0375095 B1 19960131 - Method and device for controlling the strip width during the hot-rolling of strip
Title (en)
Method and device for controlling the strip width during the hot-rolling of strip
Title (de)
Verfahren und Vorrichtung zum Regeln der Bandbreite beim Warmbandwalzen
Title (fr)
Procédé et dispositif pour le réglage de la largeur de bande lors du laminage de bandes à chaud
Publication
Application
Priority
- DE 3843730 A 19881222
- DE 3843731 A 19881222
Abstract (en)
[origin: EP0375095A2] The invention relates to a method and a device for controlling the strip width during the hot-rolling of strip on a multiple-stand finishing line of a rolling mill train in which the speeds of the working rolls of each stand are controlled as a function of the instantaneous operating state. Here, the strip widths are sensed directly after the last reduction per pass and/or before the penultimate reduction per pass and are compared with the desired width in a width controller. In the event of deviations, a strip-supply controller for the strip supply between the last stands is acted upon, which strip-supply controller, by adjusting the roll nips, corrects the strip supply and the tensile stress of the strip in such a way that the strip width changes. The method is optimized by additional control of the strip thickness according to the novel strip-supply principle as well as by dispensing with some loop lifters. <IMAGE>
IPC 1-7
IPC 8 full level
B21B 37/00 (2006.01); B21B 37/16 (2006.01); B21B 37/22 (2006.01); B21B 37/50 (2006.01); B21B 37/58 (2006.01); B21B 37/72 (2006.01)
CPC (source: EP)
B21B 37/165 (2013.01); B21B 37/22 (2013.01); B21B 37/50 (2013.01); B21B 37/72 (2013.01); B21B 2261/06 (2013.01); B21B 2271/02 (2013.01)
Designated contracting state (EPC)
AT BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0375095 A2 19900627; EP 0375095 A3 19921223; EP 0375095 B1 19960131; AT E133591 T1 19960215; AT E142916 T1 19961015; DE 58909588 D1 19960314; DE 58909734 D1 19961024; EP 0375094 A2 19900627; EP 0375094 A3 19921223; EP 0375094 B1 19960918
DOCDB simple family (application)
EP 89250130 A 19891222; AT 89250129 T 19891222; AT 89250130 T 19891222; DE 58909588 T 19891222; DE 58909734 T 19891222; EP 89250129 A 19891222