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| Study on the Backup Roll Contour for CSP Continuous Hot Rolling Mill |
| LI Hongbo1,ZHANG Jie1,CAO Jianguo1,WANG Qiang2,ZHANG Shushan2 |
| 1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Ma′anshan Iron and Steel Co., Ltd., Ma′anshan 243003, Anhui,China |
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Abstract Several domestic continuous hot rolling mills in CSP (compact strip production) have CVC (continuously varible crown) work rolls and conventional backup rolls. As the CSP production process is different from the conventional hot rolling with less product varieties,widths, and different roll service periods of stands, the wear characteristics of the rolls are different too. Through tracing and testing the backup rolls, it was found that the backup rolls of the 1800 mm CSP continuous hot rolling mill have two typical wear characteristics on different stands, the serious wear of backup rolls affects the controllability of the mill for profile and flatness of products, and increases the roll consumption.Based on theoretical analysis, two new backup roll contours were proposed for two wear characteristics. Both the trial and the FEM analysis proved that the new roll contours have good property of selfmaintenance, and can work well during the whole service period.
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Received: 01 January 1900
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2008, Vol. 43 
