| 摘要 |
<p>Process and apparatus for the cold rolling of ferrous metal or nonferrous metal strip, e.g. steel or aluminum strip, in which the strip is passed at a high rate through a multiplicity of cold rolling stands and a coolant is dispensed from nozzles directed against the rolls or the band in the region of the rolling gaps. According to the invention, the planarity of the strip is measured immediately downstream (in the direction of strip movement) of the last rolling stand and deviations from planarity are determined and converted into control signals. The planarity measurement signal is compared with a deviation-maximum signal processor until the measured deviation reaches a first threshold within the range to maximum. Only the coolant spray from the nozzles of the last stand are controlled in a planarity-restoring sense. When the measured deviation exceeds this threshold at least the nozzles of the penultimate stand are controlled.</p> |
