Operating method for a cold-rolling line train with improved dynamics
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United States of America Patent
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Aug 27, 2013
Grant Date -
Jan 20, 2011
app pub date -
Mar 9, 2009
filing date -
Mar 14, 2008
priority date (Note) -
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Abstract
In a multi-staged cold-rolling line, a strip is rolled. An actual rolling force of a last rolling stage of the cold-rolling line is detected and fed to a force control unit which determines a control parameter using the actual rolling force and a target rolling force and outputs a control parameter. An actual thickness is detected directly downstream of the last rolling stage and is sent to a thickness control unit which acts on the last rolling stage. Another actual strip thickness is detected directly upstream of the last rolling stage. Enter and exit speeds of the last rolling stage are detected and with a pre-determined final strip thickness following the last rolling stage fed to a setpoint determination unit which determines a target thickness which is used as a setpoint for another thickness control unitacting on the next to last rolling stage and receiving the other actual thickness value.
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