Thickness control method of hot-rolled strip steel and application

• Main Authors: YU BIN, ZHANG ZUNGAN, LI DAN, ZHANG LIFU, ZHONG XINJIAN, WU CHENGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2021
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

The invention relates to a thickness control method of hot-rolled strip steel and an application. The thickness control method of the hot-rolled strip steel comprises the following steps: the maximum pressing rate of each rolling mill in N rolling mills is obtained, and the second flows of the rolling mills are equal; when the maximum thickness adjusting quantity of the Nth rolling mill in the first operation duration is larger than a corresponding thickness deviation adjusting task, the Nth rolling mill is adjusted according to the corresponding scanning period, the integral control coefficient of the Nth rolling mill and the roll gap adjusting quantity obtained according to the current thickness deviation reference calculated value of the corresponding strip steel; the rolling mill before the Nth rolling mill is configured to be in a first state in which the thickness of the steel strip is kept unchanged; and the pressing rates of the N rolling mills are dynamically adjusted, and the load of each rolling mi