Rolling Level Impact on Roll Bending at Stand Output

One of the factors affecting the roll flexure at the stand output is the rolling level. It is defined as the level difference between the upper point of the lower roller and the table plane. If this value is set incorrectly, the roll bend may have an unacceptable flexure and change the downward direction. This causes the impacts of the front end on the roller and the risk of the roll getting stuck. Thus, the problems of reliable calculation and setting a given rolling level are relevant. The impact of the rolling level on the bending value is analyzed. The authors propose an algorithm for calculating the position of the stepped plate. The experiments conducted confirm that the rolling level impact on bending can be compensated by introducing an algorithm for the "ski" formation developed for a plate mill. The results of this algorithm implementation on the plate mill 5000 are considered. The paper provides oscillograms to confirm the possibility of setting a smaller speed mismatch before capture. This allows for an increased accuracy of a given bend and a reduced time for leveling the the upper and lower rollers electric drives loads at the rolling stand.