A micro-medium wave rolling method based on Siemens bending and shifting roll model optimization

Abstract

The invention discloses a slight center wave rolling method based on Siemens bending-shifting roller model optimization, and belongs to the technical field of hot rolled steel coils. According to thetechnical scheme, a bending-shifting model of a Siemens secondary model is optimized, so that in the rolling process of a finish rolling CVC roller, uniform shifting is generally presented, then the problems that when the target plate shape is well controlled, the phenomenon of plate shape instability occurs during the follow-up width specification change due to the fact that the CVC roller does not shift or the shifting amount is too small in the calculation of the Siemens second-stage model, and the consumption of the roller is too high due to the fact that the local abrasion of the CVC roller is too large are effectively solved; and meanwhile, the slight center wave rolling of a specific type of steel such as automobile girder steel can be realized, then the investment rate of the leveling process after hot rolling of the type of steel can be reduced, cooling after hot rolling and strip cutting of downstream users are facilitated, the cost is saved, and moreover, the product image and the market share of products are improved.

Description

technical field [0001] The invention relates to a Siemens bending and shifting roll model optimization and micro-wave rolling method, which belongs to the technical field of hot-rolled steel coils. Background technique [0002] During the production process of hot-rolled steel coils, the flatness of the steel strip is mainly adjusted by the combination of the secondary shape model control and the manual intervention of the operator, so as to ensure that the final shape meets the customer's requirements. The so-called straightness of the steel strip refers to the degree of curvature of the steel strip, including the edge and the middle, which are commonly known as edge waves and middle waves. The reason for this phenomenon is the uneven deformation and cooling of the steel strip, and its essence is the uneven distribution of residual stress inside the steel strip. If the situation is serious, it will affect the subsequent production, processing and use. For example, the side...

AI Technical Summary

Problems solved by technology

This causes the horizontal axial position of the CVC roll to be at the same or similar position for a long time, resulting in serious local wear of the roll. uncontrollable phenomenon

[0004] Siemens roll shifting model calculates the roll shifting position and bending roll size with the goal of strip flatness I=0, and it cannot be modified

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