Application of oil film thickness compensation model of backup roll based on field experiment
The oil film bearing is often used in the backup roll of hot rolling mill,which results in the change of the oil film thickness in the backup roll's oil film bearing and the change of the loaded roll gap,causing deviation in product thickness.Through the scope of on-site equipment usage,the experimental scheme of oil film thickness compensation model of backup roll is proposed,according to the change of roll gap caused by the actual collection of speed change under different pressures,Matlab is used to fit the relationship between the change of oil film thickness and the change of rolling force and speed,and calculate the change of oil film thickness of backup roll under different rolling speeds and pressures in the rolling process,so as to further compensate the loaded roll gap of the rolling mill.The actual applica-tion proves that the method of oil film thickness compensation of the backup roll achieves the expected effect,the rolling mill runs stably and reliably,and it can effectively improve the thickness hit ratio of the strip.
hot continuous rollingbackup rolloil film thicknessloaded roll gapthickness controlthickness accuracy
万方数据
维普
