| 摘要 |
<p>PURPOSE:To improve the dimensional accuracy of a thick plate after broadside rolling by performing a final broadside rolling basing on the target thickness of a slab after broadside rollings, in broadside rolling a thick plate by changing its directoon by 90 deg.. CONSTITUTION:In manufacturing a thick plate, by broadside rolling a slab through plural passes by changing its direction by 90 deg. after performing plural times of adjusting rollings, and rolling the slab again after changing its direction by 90 deg., the dimensions of the slab 1 is measured by a width-length meter 2 to calculate the min. width, min. length, max. width, max. length, and their mean values, etc. by a deta processor 5, and the results are inputted to a process computer 6 to prepare a pass schedule of adjusting rolling and broadside rolling by volume calculation basing on the target width and length of the slab after the final broadside rolling, and the adjusting rolling and the broadside rolling are performed by a mill 8 in accordance with the pass schedule inputted to a rolling reduction controlling device 9 to improve the accuracy of the rolled plate.</p> |
