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| Polynomial SSC model on roughing mill |
| LI Xue-tong1，LI Dong-ying1，ZANG Xin-liang1，YU Feng-qin1，HU Jian-ping2，DU Feng-shan1 |
（1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling，Yanshan University，Qinhuangdao 066004，Hebei，China
2. Department of Rolling Steel，CISDI Engineering Co.，Ltd.，Chongqing 401122，China） |
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Abstract The Short Stroke Control（SSC） is an effective way to improve the shape of slab head and tail and reduce metal loss during the process of roughing mill to adjust the width of slab. While the present broken line SSC model，which is often used， needs to be improved. Based on the processing parameters of some hot strip roughing mill group，a coupling thermal-mechanical numerical simulation model for vertical and horizontal rolling was established using rigid-plastic finite element method，by which the unsteady deformation of strip ends in roughing mill was deeply analyzed and the change of the width reduction at the ends of slab was obtained. According to the simulated results obtained，a fifth polynomial SSC strategy was proposed，and the corresponding polynomial SSC model was determined. Through comparison among simulated results，it can be showed that the new established polynomial SSC model has a better ability to improve the shape of strip ends and increase the yield of hot strip product.
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Received: 19 October 2015
Published: 11 July 2016
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2016, Vol. 51 
