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| Improvement of Dynamic Strip Tension Control Model for Threadingin Rolling on Cold Tandem Mill |
ZHANG Xiaofeng1，ZHANG Qingdong1，HUANG Peijie2，
WANG Kangjian2，WU Bin2 |
| 1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Cold Rolling Dept., Baoshan Iron and Steel Co., Ltd., Shanghai 200941, China |
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Abstract To solve both the problems of unstable tension and difficult start in threadingin process on 1420 tandem cold mill, a model of strip tension fluctuation in threadingin process was built,with a formula of static deviation of strip tension. The factors influencing on strip tension were analyzed according to tension control and continuous rolling theories. The results indicate that using Pcontroller to adjust tension could make tension fluctuate; the tension stability and quality of tension creation could be improved by increasing proportion coefficient of controller,reducing presetting velocity on stand No1 and rolling force on each stand.The model was applied in tension optimization in threadingin process of 1420 tandem cold mill, with satisfactory results.
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Received: 01 January 1900
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2008, Vol. 43 
