Control method of strip steel deviation correction based on finish rolling vertical rolls

Abstract

The invention discloses a control method of strip steel deviation correction based on finish rolling vertical rolls. The control method of the strip steel deviation correction based on the finish rolling vertical rolls specifically includes the following steps: S1, judging deviation types of strip steel based on deviation, detected on an exit of a finishing mill F7, of a strip steel rolling line and rolling force of an F1 rolling mill, wherein the deviation types include a head-tail ipsilateral deviation type and a head-tail reverse deviation type; and S2, regulating and controlling pressure of the vertical rolls on the DS (drive side) and / or the OS (operation side) according to the deviation types of the strip steel, and mitigating the deviation degree of the strip steel through the pressure of the vertical rolls on the DS and / or the OS. The control method of the strip steel deviation correction based on the finish rolling vertical rolls detects the deviation types of the strip steel,controls pressure output of the vertical rolls on the two sides based on the deviation types so as to improve the deviation degree of the strip steel, reduces occurrence frequency of the deviation situation of the center line in the finish mill in rolling of the strip steel, improves product quality, facilitates stable production of the hot rolling, and brings good benefit.

Description

technical field [0001] The invention belongs to the technical field of strip production in hot continuous rolling mills, and more specifically, the invention relates to a control method for correcting deviation of strip steel based on finishing vertical rolls. Background technique [0002] Wedge is a crucial plate shape index in the production and use of hot-rolled strip steel. The cold-rolled base material wedge is too large, causing the cold-rolling unit in the downstream process to extend unilaterally and create waves during the rolling process. In severe cases, deviation will occur, affecting product quality and production stability. According to the production practice in recent years, the adjustment of the strip deviation by the vertical roll before the finish rolling can effectively reduce the wedge generated in the thin strip rolling process. However, the traditional finishing vertical roll is mainly used for the control of the guiding position of the strip steel. T...

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Problems solved by technology

However, the traditional finishing vertical roll is mainly used for the control of the guiding position of the strip steel. The control method is simple, and it relies too much on manual experience to intervene. It cannot adapt to the increasing diversity of product specifications and the market's high-quality requirements for products. In-depth excavation of the control function, and more fully play the role of correcting the deviation of the strip in rolling

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