Cold rolling mill and method of cold rolling metal strip

Details Cold rolling mill and method of cold rolling metal strip Cold rolling mill and method of cold rolling metal strip

B - Operations, Transporting

21

B

B21B 37/50 (2006.01) B21B 37/16 (2006.01) B21B 37/54 (2006.01) B21B 1/36 (2006.01) B21B 37/24 (2006.01) B21B 41/00 (2006.01)

Patent

CA 2453297

The invention relates to a method for cold roll forming a metallic strip (8), a steel strip in particular, comprising a single frame (1), having means for adjusting a roll gap, a winding device (9) which is arranged upstream of the cold roll single frame for unwinding the strip (8), and a winding device (10) which is arranged downstream of the cold roll single frame (1) for winding the strip (8). The aim of the invention is to eliminate all problems connected to strip tension when the thickness of the strip varies and to increase the speed of the strip. To achieve this, a strip accumulator (2) is arranged between the upstream winding device (9) and the single frame (1) for controlling the mass flow and/or tension of the rolling process, particularly when flexible rollers are used.

L'invention concerne un laminoir à froid et un procédé de laminage à froid d'une bande métallique (8), notamment d'une bande d'acier, composé d'une cage individuelle (1) comportant des moyens destinés à régler l'emprise, d'un dispositif de déroulage (9) logé en amont de la cage individuelle de laminoir à froid, destiné à dérouler la bande (8), et d'un dispositif d'enroulage (10) logé en aval de la cage individuelle de laminoir à froid (1), destiné à enrouler la bande (8). L'invention vise à éliminer tout problème lié à la tension de la bande dans le cas de variations de l'épaisseur de la bande, et à augmenter la vitesse de la bande. A cet effet, une bande accumulatrice est disposée entre le dispositif de déroulage (9) logé en amont et la cage individuelle (1), ladite bande servant à la régulation du flux massique et/ou à la régulation de la tension de la bande du processus de laminage, notamment dans le cas de cylindres flexibles.

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