Steckel hot rolling mill

B - Operations – Transporting – 21 – B

Patent

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Details

B21B 37/54 (2006.01) B21B 1/34 (2006.01) B21B 37/50 (2006.01) B21B 37/56 (2006.01)

Patent

CA 2330099

The invention relates to a Steckel hot rolling mill comprising at least one reversing roll stand (1) as well as coilers (6, 7) which are positioned upstream and downstream and present torque-controlled drives. The aim of the invention is to improve such a hot rolling mill in such a way that it optimally counteracts variations in tension and/or mass flow caused by changes in process parameters and allows for high-quality hot rolling, especially of very thin hot-rolled strips. To this end the invention provides for a looper (8 9) to be positioned between both coilers (6, 7) and the reversible roll stand (1), which supplies actual values for adjusting tension and mass flow.

L'invention concerne un laminoir à chaud Steckel comportant au moins une cage réversible (1), ainsi que des bobineuses (6, 7) placées en amont et en aval de celle-ci et possédant des systèmes d'entraînement dont le couple de rotation est régulé. Un tel laminoir doit être perfectionné afin d'empêcher de manière optimale les variations de tension et/ou de flux massique provoquées par les variations des paramètres du processus et de permettre également le laminage, notamment d'un feuillard à chaud mince, avec une qualité élevée constante. A cet effet, entre les bobineuses (6, 7) et la cage réversible (1) est disposé respectivement un couloir à boucles (8, 9) qui fournit des valeurs réelles pour la régulation en tension ainsi que la régulation du flux massique.

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