INFLUENCE OF ROLL SURFACE STATE ON ROLLING MILL VIBRATION
Mill vibration has a significant impact on the thickness accuracy and surface quality of strip products,leading to constraints on efficient and stable production.This paper presents an experimental study on the influence of roll surface state in the third stand(F3)of a hot rolling finishing mill set on mill stability.The roughness of the work roll surface of the F3 mill was tracked before and after operation,and vibration signals from the work roll during high-strength steel rolling were collected using a vibration sensor.By comparing roll surface roughness with mill vibration signals,this study provides insights into the influence of roll surface state on mill vibration.The results indicate that work rolls without grinding exhibit higher surface roughness,poorer condition,and increased vibration strength when rolling high-strength steel.The presence of periodic vibration marks on the roll surface reduces process stability and can lead to severe mill vibrations.It is recommended to maintain a working roller roughness Ra value below 1.0 p.m when rolling high-strength steel to ensure stable operations.
hot rollingroll surfaceroughnessrolling mill vibrationstability
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