Automatic roller eccentricity identification method and system based on hot-rolled strip steel rolling force

Abstract

The invention discloses an automatic roller eccentricity identification method and system based on hot-rolled strip steel rolling force. The method comprises the steps that rolling mill rolling forcefluctuation data in the strip steel length direction are obtained; rolling force fluctuation data of the perimeter interval of each roller are calculated according to the roller diameter; the similarity of the rolling force fluctuation data of the perimeter intervals of every two adjacent rollers is calculated; and the calculated similarity is scored according to a standard threshold value to obtain a roller eccentricity state score, and whether roller eccentricity exists or not is judged by comparing the roller eccentricity state score with a preset threshold value. Rolling force fluctuationsimilarity information in the length direction of the strip steel can be calculated in real time, whether roller eccentricity exists in a rolling mill or not is automatically judged according to an identification algorithm, and a data basis is provided for discovering roller defects of the rolling mill in time on a production site.

Description

technical field [0001] The invention relates to the technical field of hot-rolled strip steel quality control, in particular to an automatic identification method and system for roll eccentricity based on hot-rolled strip steel rolling force. Background technique [0002] Roll eccentricity is mainly caused by the non-circularity of the shape of the roll and roll bearing, and the causes generally come from the process of equipment manufacturing, wear and thermal expansion of the roll. The eccentricity of the roll will cause periodic fluctuations in the thickness of the rolled piece, which will reduce the control accuracy of the AGC (Automatic Thickness Control) system, resulting in a large deviation in the thickness of the finished product. Therefore, how to automatically identify the data related to roll eccentricity, and judge whether the roll is eccentric, and provide help for timely troubleshooting of equipment and production failures at the production site, is of great s...

AI Technical Summary

Problems solved by technology

However, most of the current algorithms do not carry out a detailed analysis of the degree of roll eccentricity. There is no corresponding index for which degree of roll eccentricity will affect the normal rolling of the strip, and when it is judged when the roll eccentricity does not meet the corresponding standards. The extraction of the quantity generally requires no-load pressure on the roll, and the calculation is carried out by collecting relevant data of the roll under no-load. There is not much research on the real-time change of the eccentricity of the roll during the rolling process.

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