Finish rolling strip steel head pre-swing leveling control method based on incoming material camber

Abstract

The invention provides a finish rolling strip steel head pre-swing leveling control method based on an incoming material camber, and belongs to the technical field of plate and strip rolling. The method comprises the following steps that firstly, a base roll gap value Si0 of each rack is calculated according to rigidity of two sides of each rolling mill; then a deviation regulation and control efficacy coefficient Ki of each rack is calculated according to historical deviation data; deviation curve processing is carried out on an intermediate billet; an intermediate billet camber change quantity delta Li is calculated; a bending quantity L value of a camber head of the intermediate billet to be controlled is determined; according to the bending amount of the camber head, a single-side roll gap adjusting amount delta Si of the ith rack is obtained; and finally a roll gap pre-swing value Si of each rack is calculated and transmitted to a pressing system to be executed. The method can eliminate the deviation influence of the camber head of the intermediate billet on finish rolling.

Description

technical field [0001] The invention relates to the technical field of strip rolling, in particular to a method for controlling the pre-swing leveling of the head of a finished strip steel strip based on incoming camber. Background technique [0002] Hot-rolled strip steel is an important steel product, and hot rolling is one of the main methods of hot-rolled strip steel production. figure 1 A hot continuous rolling production line for hot strip steel is shown. like figure 1 As shown, the hot continuous rolling production line mainly includes a heating furnace, a roughing mill, a finishing mill, a laminar flow cooling device and a coiler, wherein the finishing mill includes several finishing stands, and in the hot continuous rolling production line, the finishing mill includes a finishing stand F1-F7. The production process of the hot continuous rolling production line is: first, the billet is heated by the slab in the heating furnace, secondly, it is dephosphorized by hi...

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