Control method of thick plate rolling warping and bending

Abstract

The invention discloses a control method of thick plate rolling warping and bending. The control method comprises the steps that a large data analysis is carried out on rolling variety specifications,passes, reduction, upper and lower surface calculation temperatures and the occurrence time and characteristics of warping and bending through warping and bending detection device data to obtain thewarping and bending occurrence rule related to the rolling variety specifications; the preventive intervention is carried out in advance before the occurrence of warping and bending in control, so that the occurrence probability of the rolling warping and bending and the influence on production are reduced; and the effect generated after the intervention is measured and fed back to a computer again, the rule is calculated again, and the measures are circularly improved. The thick plate rolling production line can realize systematic analysis and preventive control on the rolling warping and bending, wherein the preventive control belongs to feed-forward type pre-control based on data accumulation, and can be circularly improved. The method summarizes the rule of the warping and bending, andcan effectively reduce the occurrence probability of the warping and bending in large-scale production.

Description

technical field [0001] The hot-state rolling control technology of the present invention, more specifically, relates to a method for controlling warped buckles in thick plate rolling. Background technique [0002] The buckle control is a common problem in the hot rolling process of the iron and steel industry. At present, there are many research results and related patent applications. After consulting the relevant patent documents, the comprehensive analysis is as follows: [0003] One is the patent of the device for detecting rolling buckle head, such as the Japanese patent METHOD FOR DETECTING WARPING ANGLE OF ROLLED STEEL PLATE <jp19820017994>, and the Chinese patent hot-rolled strip buckle detection device <ZL200920070471.4>, which mainly describes the characteristics of the buckle after the rolled steel plate exits the rolling mill through optical or mechanical components, including height, length and curvature , that is, the real-time rolling buckle head ...

AI Technical Summary

Problems solved by technology

In large-scale production, if the probability of warping is high during rolling, this feedback control does not summarize the law of warping, but only the improvement of a single warping event.

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