Edge-drop reduction effect of intermediate roll shift -- technology development for controlling strip edge-drop in a cold tandem mill I

摘要

A 3-dimensional analysis model based on the slab method for predicting the edge-drop of a strip in a cold tandem mill in which the thickness deviation was compensated for by the lengthwise deviation of a strip between stands was developed. Fromsimulations carried out using this model, it was found that the edge-drop is decreased considerably by the intermediate roll shift and that the edge-drop control characteristics are considerably different at each stand. The above results were confirmedexperimentally in a cold tandem mill and the calculated edge thickness profiles of cold-rolled strips were in good agreement with the experimental results. Therefore, it is concluded that edge-drop can be improved effectively by combining the intermediate roll shifts at multiple stands.