The influence of the change in the crown of the backup rolls on the crown of the strip is significantly reduced relative to the crown of the work roll. Since changing the crown of the backup rolls can only adjust the contact state between the work roll and the backup roll, it does not work for the no-load roll gap.
Determination of the basic value of the influence rate of the backup rolls crown
The basic value of the influence of the crown of the support roller obtained by the strip crown influence rate simulation software is shown in Fig. 1 (b).
It can be seen that the basic value of the influence of the backup rolls crown decreases with the increase of the strip width, which indicates that the larger the strip width, the greater the influence of the backup rolls crown on the strip crown.
