Advanced variable crown work roll contour and its crown control characteristics
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摘要: 跟踪某2250 mm热轧生产线CVC辊形实际窜辊数据发现,连续变凸度(CVC)辊形常窜到两端极限位置.分析表明,CVC辊形的二次凸度调控能力随带钢宽度减小而呈二次方下降趋势,表现出对较窄带钢凸度控制能力的明显不足.Smart-Crown辊形也存在同样问题.提出一种新的先进变凸度(AVC)工作辊辊形曲线,其二次和四次凸度与窜辊量呈线性关系,且随着四次凸度控制能力的增大,二次凸度控制能力随带钢宽度的变化明显放缓,有助于提高宽带钢或超宽带钢轧机对不同宽度带钢的板形控制能力.Abstract: After industrially tracing and testing the shifting positions of continuously variable crown(CVC) work rolls for a 2 250 mm hot strip production line,it was found that CVC work rolls always worked at the limit positions.The analysis showed that the quadratic crown control capability of the CVC work roll contour declined quadratically with decreasing strip width,leading to an insufficient crown control capability to narrow strip steel,and so did SmartCrown work rolls.A new advanced variable crown(AVC) work roll was proposed,whose quadratic crown and quartic crown vary linearly with roll shifting positions.With the quartic crown control capability increasing,the quadratic crown control capability varies slowly with strip width,indicating that the new contour can improve the crown control capability of a wide strip or super wide strip rolling mill for different strip widths.
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Keywords:
- hot rolling mills /
- work rolls /
- roll contour /
- crown control
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期刊类型引用(3)
1. 刘宏民，于华鑫，王东城，张桐源. 整辊式板形仪通道耦合影响系数的标定计算模型. 重型机械. 2023(04): 18-23 . 
百度学术
2. 刘宏民，于华鑫，王东城，宋明明，张帅，徐扬欢. 冷轧带钢板形测控技术的发展状况和关键问题. 钢铁. 2022(11): 22-32 . 百度学术
3. 白振华，张立更，崔熙颖，刘超智，李鹏. 冷轧薄板离线板形测量误差分析及其修正技术. 塑性工程学报. 2020(04): 164-169 . 百度学术
其他类型引用(3)
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