Temperature control apparatus of hot-rolling mill
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United States of America Patent
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Aug 7, 2018
Grant Date -
Nov 24, 2016
app pub date -
Feb 4, 2014
filing date -
Feb 4, 2014
priority date (Note) -
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Abstract
A temperature control apparatus of a hot-rolling mill according to the present invention extracts a high-frequency component, a medium-frequency component, and a low-frequency component from a deviation between a calculated value or a measured value of a material temperature in a temperature managing position set on an outlet side of the hot-rolling mill and a given temperature target value. The temperature control apparatus then corrects a reference value of electric power of an induction heating device set to an electric power changing device based on the high-frequency component, corrects a reference value of a cooling water flow rate set to a flow rate changing device based on the medium-frequency component, and corrects a reference value of a roll rotation speed set to a speed changing device based on the low-frequency component.
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