Appraisal of Roll Wear Pattern of CVC Mill

Large amount of measured data on roll wear of CVC mill in CSP production line were obtained and different roll wear patterns from F1 to F7 were investigated. The working roll wear of F1-F4 and F7 ws symmetric, while that of F5 and F6 wasn't symmetric. The self-keeping parameters and variance characteristic parameters of roll contour were calculated for each stand on the basis of measured data. The analysis and appraisal for roll wear of different stand were conducted. The working roll wear is even along longitudinal direction, and the self-keeping ability is quite well. This shows the roll crown of CVC mill is suitable, and it can guarantee good sheet shape.