PRODUCTION OF STEEL PLATE HAVING EXCELLENT QUALITY AT END

摘要

PURPOSE:To decrease the generation of seam flaws and to improve the yield of shape adjustment rolling just prior to cross rolling by executing shape correction rolling and edging the longitudinal end to a specific length or above in the finish rolling. CONSTITUTION:The roll gaps, rolling reductions and working speeds of edging rolls 1 and reversible horizontal rolls 2 are controlled by using a measuring instrument group 9. A device 12 for calculating and commanding cutting calculates continuously the cutting quantity over the entire region at the side end edges of the steel plate by receiving the output from a control output device 11 for outputting the result of working and the signal inputted from a width gage 10 and instructs the cutting quantity and speed to a control device EM for an edge mirror 7. The end of the steel plate in the longitudinal direction are edged at =70mm in total.