Method and device for controlling the thickness of a rolled product
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United States of America Patent
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Aug 8, 2006
Grant Date -
Nov 11, 2004
app pub date -
Mar 29, 2004
filing date -
Apr 11, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method and a device for controlling the final thickness of a rolled product (B) at the outlet of a rolling mill including at least two roll stands (1 5) operating in tandem and associated with a general speed control system of the different stands, and to a device for controlling the reduction in thickness and in tension of the product (B) in each space (10 50) between two successive stands.According to the invention, the control device performs, in real time, dynamic balance, between the different stands (1 5), of the torques applied, in each stand, on the working rolls (T, T'), without any noticeable disturbance of the final thickness h.sub.5 of the product (B) at the outlet of the plant.The invention enables, in particular, to optimise the productivity of a tandem rolling mill, without any engine overloading risks.
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