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| Asymmetric Roll Force Calculation With Additional Tilt for Drive Side and Operator Side of Cold Strip Mill |
| LIU Bao-quan1,2,ZHANG Hong1,WANG Zi-dong1,WANG Jun-sheng2,ZHANG Yan2 |
1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
2. Angang Steel Company Limited, Anshan 114021, Liaoning, China |
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Abstract The single edge wave and strip break caused by excessive tilting adjustment were analyzed. Influence function method was adopted to model the roll deformation. Adding different tilt, roll force of drive side, roll force of operator side, transverse distribution of contact pressure between rolls, transverse distribution of roll force, transverse distribution of strip thickness at exit side and transverse distribution of tension at exit side were calculated by using iterative method. The theoretical calculation and the actual measurement results show that the difference between the bilateral increases almost linearly with tilt adjustment value. The break strip accidents are effectively averted by dynamic limiting to tilt setting value with the measured differential roll force, according to the proportional relationship between the differential roll force and the tilt.
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Received: 27 October 2010
Published: 01 November 2011
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2011, Vol. 46 
