Importance

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Abstract

The invention relates to a method for combining the operating modes of individual rolling frames in a tandem cold rolling mill comprising respective pairs of working rolls (10) and back-up rolls (12) in 4-roll frames and in addition a pair of intermediate rolls (11) in 6-roll frames, at least the working rolls (10) and the intermediate rolls (11) interacting with devices for axial displacement. Said method is characterised by a combination of the following technologies: use of CVC/CVC.sup.plus technology with CVC roll contours of a higher order, where each working/intermediate roll (10, 11) comprises a roll surface that is extended by the amount of the travel displacement; use of Pair Cross (PC) technology, whereby each working/intermediate roll (10, 11) can be pivoted parallel to the strip plane; use of strip-edge oriented displacement of the working/intermediate rolls (10, 11), each of the latter (10, 11) having a roll surface that is extended by the amount of the travel displacement, with a cylindrical or spherical section and said rolls being displaced symmetrically against one another relative t o the neutral displacement position (S.sub.ZW=0 and S.sub.AW=0 ) in the centre of the frame (Y-Y) by an identical amount in the direction of their rotational axes (X-X). The method is also characterised in that the CVC/CVC.sup.Plus technology, the strip-edge oriented displacement technology and optionally the PC technology can be achieved using a suitable plant concept with a single geometrically identical set of rolls.

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First Claim