Method and apparatus for automatic gauge control system for tandem rolling mills
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United States of America Patent
Stats
-
Sep 1, 1981
Grant Date -
N/A
app pub date -
Mar 12, 1979
filing date -
Mar 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Method and apparatus are disclosed for controlling the final output gauge of strip material passing through a tandem rolling mill in which the final reduction in gauge is substantially accomplished at the next to the last stand. An automatic gauge control (AGC) loop responsive to the changes in speed of the next to the last stand, controls the speed regulators for the last two stands. Responsive to the next to the last stand speed, the AGC loop provides a variable gain at low and high mill speeds respectively to appropriately adjust the control signals to the speed regulators for the last two stands. Interstand tension control between the last two stands is provided by modification of the speed regulator for the last stand.
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