Hot rolled strip steel finishing rolling temperature control method based on speed adjustment

Abstract

The invention relates to a hot rolled strip steel finishing rolling temperature control method based on speed adjustment. The method comprises the steps that a corresponding table of the strip steel target thicknesses and first accelerated speeds, a corresponding table of the finishing rolling temperature deviations and second accelerated speeds, and a corresponding table of the strip steel target thicknesses and acceleration revision coefficients are set; strip steel threading is conducted at a threading speed; the corresponding first accelerated speeds are searched according to the strip steel target thicknesses and used for conducting accelerated rolling on strip steel; the corresponding second accelerated speeds are searched according to the finishing rolling temperature deviations of the strip steel; the corresponding acceleration revision coefficients are searched according to the strip steel target thicknesses; a third accelerated speed is obtained by multiplying the second accelerated speeds by the acceleration revision coefficients; the third accelerated speed is used for adjusting the speed; and after a first finish rolling rack or a second finish rolling rack starts to tailing-out, a deceleration speed given by a finish rolling model is used for deceleration rolling. The hot rolled strip steel finishing rolling temperature control method based on speed adjustment can effectively improve the rolling temperature control precision.

Description

technical field [0001] The invention relates to the technical field of hot rolling, in particular to a method for controlling the finishing temperature of hot-rolled strip steel based on speed regulation. Background technique [0002] In the hot rolling production process, the finish rolling temperature is an important parameter affecting the performance of the strip steel, and the control accuracy of the finish rolling temperature of the strip steel reflects the level of product quality control of a steel company. At present, the hot rolling production line generally installs inter-stand cooling water between the finish rolling stands, and the final rolling temperature control is mainly based on water adjustment, supplemented by speed regulation; among them, the strip steel with a thickness of 3.0mm and below does not use inter-stand cooling water. The final rolling temperature is controlled by adjusting the rolling speed, and the rolling speed is carried out according to t...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problems of low efficiency and poor control effect of the finishing temperature control of hot-rolled strip in the prior art by providing a method for controlling the finish-rolling temperature of hot-rolled strip steel based on speed adjustment, and improves the temperature of hot-rolled strip steel. The control efficiency of the finish rolling temperature ensures the control effect of the strip finish rolling temperature

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