Patent ID: 8327918

Claim:
Method for fabricating a steel strip, in which firstly a slab is cast in a caster, with the slab exiting the caster at a casting speed (v) with a given slab thickness (H), with the slab then being rolled to form a strip in at least one rolling train having a number of rolling stands and the strip having a final thickness (d E ) downstream of the last rolling stand, characterized in that the method has the following steps: a) providing a functional relationship in a machine controller between the casting speed (v) or the mass flow as a product of the casting speed and slab thickness or as a product of strip speed and the strip thickness, and the strip temperature (T) downstream of the last rolling stand, which rolls the strip, for a different number (n) of active rolling stands and different final thicknesses; b) determining or specifying the casting speed (v) or the mass flow (v×H) and feeding the determined value into the machine controller; c) determining the optimum number of active rolling stands and the final thicknesses and thickness reductions which can be rolled with them in the rolling train using the functional profiles stored in accordance with step a) in the machine controller in order to achieve a desired strip temperature (T) downstream of the last active rolling stand at the given casting speed (v) or at the given mass flow (v×H); d) raising a number of rolling stands in the rolling train so that only the number of rolling stands determined in accordance with step c) are active, wherein a rolling stand is raised based on a predefined differential rolling force (ΔFw) exceeding a threshold value, with the raised rolling stand being taken into account in step c).