A method, system, device, and medium for determining the initial rolling level value.

CN115532847BActive Publication Date: 2026-05-26SHOUGANG JINGTANG IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHOUGANG JINGTANG IRON & STEEL CO LTD
Filing Date
2022-09-14
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

After the roll change, the changes in roll diameter, roll shape, assembly gap and thermal crown of the new and old rolls lead to differences in the initial rolling level value. The existing technology of artificially setting the level value is unreasonable, which causes the strip to shift and produce the sickle bend problem.

Method used

By obtaining the rolling force deviation value and rolling characteristic coefficient of the previous cycle and the current cycle, the rolling level value of the current cycle is calculated using a preset formula, including the relationship between the rolling force deviation value and the level value, and is given accurately.

Benefits of technology

This improves the stability and precision of the initial rolling after roll changing, avoids the formation of sickle bends, and ensures the stability and precision of the strip rolling process.

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Abstract

This invention discloses a method, system, equipment, and medium for determining the initial rolling level value. It includes obtaining the initial rolling level value for the current cycle based on a preset formula and rolling characteristic coefficients, using the deviation and level value of the rolling force in the previous rolling cycle and the deviation value of the rolling force in the current cycle. The invention adds the relationship between the initial rolling level value and the rolling force deviation during the two calibrations and before zeroing the pressure head, as well as the relationship between the level value and rolling force deviation during the rolling of two strips, allowing the entire calculation to be directly performed using test data. This improves the stability and accuracy of initial rolling after roll changes and, to some extent, avoids the problem of camber during the initial rolling process.
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