Analysis and control of the profile of hot rolled strip
This project investigated edge drop formation and means of influencing it during hot rolling. It was carried out in a research mill and in the Hoesch hot rolling mill. Off-line and on-line measuring equipment was employed to determine the thickness profile. The tests were accompanied by comprehensive finite element calculations of the roll gap and analytical calculations. The results show that edge drop and strip profile are influenced by the reduction rate, the strip tension distribution in the strip before the last stand, and by failure to roll the strip symmetrically to the centre line. No changes were observed in the rolled product either in the roughing train or when rolling was straight and symmetrical. The purpose of minimising edge drop is to achieve uniform thickness and to reduce scrap from trimming. Prerequisites for this are reduction in the last stand, correct adjustment of strip tension between the last two stands, and accurate rolling to the mill centre line; alteration of the rolling parameters does not entirely prevent edge drop. The process parameters now established are to be employed in a model for the automation of the hot rolled strip finishing train.
Bibliographic Reference: EUR 14233 DE (1992) 145 pp., FS, ECU 18
ISBN: ISBN 92-826-4721-8
Record Number: 199310075 / Last updated on: 1994-11-29
Original language: de
Available languages: de