短行程控制是粗轧中间坯调宽过程中改善轧件头尾部形状、降低切损量的有效方法，而目前采用较多的折线式短行程控制模型还有待进一步提高。结合热带钢粗轧机组实际工艺条件，采用刚塑性有限元法建立立辊/水平辊连轧过程热力耦合数值计算模型，对粗轧过程头尾部非稳态变形分布进行深入分析，得出中间坯头尾部立辊/水平辊轧制失宽变化规律。基于数值计算结果提出5次多项式短行程控制策略，并建立相应多项式短行程控制模型。通过对比计算结果表明，新建的多项式短行程控制模型具有更好的头尾形状控制能力，提高了热带钢产品成材率。
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 compar-ison among simulated results,it can be showed that the new established polynomial SSC model has a better ability to im-prove the shape of strip ends and increase the yield of hot strip product.
参考文献
| [1] | 王国栋.中国钢铁轧制技术的进步与发展趋势[J].钢铁,2014(07):23-29. |
| [2] | 王海玉;杨荃;王晓晨;陈宇峰;董立杰;张喜榜.粗轧中间坯走偏对镰刀弯的影响分析和控制[J].钢铁,2014(8):59-63. |
| [3] | 薛丽;王焱.热轧带钢短行程智能控制综述[J].山东冶金,2009(6):3-5,8. |
| [4] | 李学通;杜凤山;孙登月;吴建峰.热轧带钢头尾形状短行程控制研究[J].钢铁,2005(2):51-54. |
| [5] | ZANG Xin-liang;LI Xue-tong;DU Feng-shan.Head and Tail Shape Control in Vertical-Horizontal Rolling Process by FEM[J].钢铁研究学报（英文版）,2009(05):35-42. |
| [6] | 杜晓钟;杨荃;何安瑞;王爱丽.热轧带钢立辊调宽短行程控制模拟研究与应用[J].塑性工程学报,2008(5):182-185. |
| [7] | DU Xiao-zhong;YANG Quan;LU Cheng;WANG Ai-li;Tieu A Kiet.Optimization of Short Stroke Control Preset for Automatic Width Control of Hot Rolling Mill[J].钢铁研究学报（英文版）,2010(06):16-20. |
| [8] | 吴建峰;王国栋.热轧带钢短行程控制优化的研究与实践[J].钢铁,2008(8):44-48. |
| [9] | 刘文斌;康永林;崔伦凯;袁辉;南宁.迁钢2250mm热轧短行程控制模型参数优化[J].轧钢,2010(1):51-54. |
| [10] | 江潇;南宁;余威;李飞;李彬.迁钢2160热轧短行程控制模型研究[J].钢铁,2009(8):64-66,71. |
| [11] | 李学通;黄兆猛;王敏婷;杜风山.基于有限元和优化的粗轧短行程控制曲线研究[J].计算力学学报,2012(4):616-619. |
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