Slight center wave rolling method based on Siemens bending-shifting roller model optimization

A technology of Siemens and roll shifting, applied in metal rolling, rolling force/gap control, contour control, etc., can solve problems such as uncontrollable plate shape and roll wear, so as to save costs, increase market share, reduce The effect of leveling process input rate

Active Publication Date: 2018-11-16
HEBEI IRON AND STEEL
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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. uncontrolla

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  • Slight center wave rolling method based on Siemens bending-shifting roller model optimization

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[0018] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

[0019] In an embodiment, the present invention adopts the following technical solutions:

[0020] 1. Increase the comparison of the target roll shifting amount A in the Siemens bending and shifting model. If A is less than S, add a random value N on the basis of A to avoid CVC rolls not moving for a long time, or moving to In the same position, the values ​​of S and N are set manually.

[0021] 2. When setting the basic parameters of the shape calculation, the Siemens roll bending and shifting model will read the alloy composition, width, thickness and other parameters of the current steel strip to set the bending force. The Siemens bending and shifting roll model will store these parameters in the form of txt text in an absolute path on the computer in advance. Modify the Siemens bending and shifting roll model program, and store the alloy co...

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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...

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Application Information

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IPC IPC(8): B21B37/28B21B37/58
CPCB21B37/28B21B37/58B21B2201/06
Inventor 罗波赵常操刘旭飞鲁剑龙张秀收李杰
Owner HEBEI IRON AND STEEL
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