Rolling control device and rolling control method

Abstract

The invention provides a rolling control device and a rolling control method, wherein the plate thickness between the pedestals can be calculated in a high-efficiency manner without additionally arranging any special hardware. The centring arrangement of a plurality of rollers is adopted, the thickness of the plate on the outlet side opposite to the roller of the last segment of the rolling sequence can be acquired, and based on the plate thickness of the outlet side, the plate thickness of the inlet side can be calculated according to the mass-flow conservation principle. The calculated result of the plate thickness of the inlet side opposite to the roller can be used for the repeated calculation of the plate thickness of the rolled material sent by the roller pair abutting against the front part, and therefore the plate thickness of the inlet side of the roller pair can be calculated, the error between the plate thickness of the inlet side of the roller pair arranged on the starting end and the plate thickness of the roller pair calculated by using other methods can be calculated. Based on the calculated errors, the above mentioned errors can be corrected.

Description

technical field [0001] The present invention relates to a rolling control device and a rolling control method. More specifically, the present invention relates to high accuracy of an estimated value of an intermediate plate thickness based on the law of conservation of mass flow rate. Background technique [0002] There is a tandem rolling mill that obtains a desired plate thickness by arranging a plurality of rolling stands and rolling a material to be rolled a plurality of times. In such a continuous rolling mill, mass flow thickness control may be performed. In this mass flow thickness control, the speed of the rolled strip is detected to obtain an estimated value of the thickness directly below the rolling mill (hereinafter referred to as "mass flow rate estimation plate thickness"), and perform plate thickness control. [0003] In order to stabilize the rolling when the front end of the steel plate to be rolled gradually bites into each rolling stand, and to obtain a h...

AI Technical Summary

Problems solved by technology

Therefore, only the plate thickness between the rolling stands and the rolling stands (hereinafter referred to as "intermediate plate thickness") can only be estimated, and improving the estimation accuracy of the intermediate plate thickness has long been an important issue

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