宽带钢热连轧机自由规程轧制的板形控制技术  

Profile and flatness control technology for schedule-free rolling in hot wide strip mills

作　　者：曹建国[1] 轧楠[1] 米凯夫[1] 宋平[2] 鄢檀力[2] 蔡海斌[2] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]武汉钢铁集团公司,武汉430083

出　　处：《北京科技大学学报》2009年第4期481-486,共6页Journal of University of Science and Technology Beijing

基　　金：北京科技大学科技发展专项基金资助项目(No.20050311890)

摘　　要：针对无取向硅钢连续自由编排"批量同宽"的自由规程轧制要求,自主开发了ASR-C非对称自补偿工作辊技术.采用ANSYS建立了三维辊系有限元模型.有限元分析和工业应用试验发现,ASR-C工作辊无论是在带钢宽度变化时,还是在轧制单位完整服役期内,均具有稳定的凸度和磨损控制双重能力,同时ASR-C工作辊增强了辊缝横向刚度和弯辊力的调节效率.在武钢1 700 mm热连轧机进行了2.55 mm×1 280 mm宽幅无取向硅钢"批量同宽"轧制的ASR-C工作辊工业试验.结果表明,凸度≤45μm的带钢比例由常规工作辊的41.8%提高到98.2%,凸度>53μm的带钢比例从33.9%下降到1.8%,ASR-C工作辊辊形自保持性达到88%.ASR-C技术取得显著稳定的凸度和磨损控制效果,实现了"批量同宽"的自由规程轧制.In order to meet the requirement of schedule-free rolling for wide non-oriented electrical steel strip production with a large number of the same width strip rolling campaigns, an asymmetry self-compensating work roils （ASR-C） technology was developed. A three-dimensional finite element analysis model of roll stacks was built by ANSYS software package. The finite element analysis and industrial tests indicate that the developed ASR-C technology has both crown control ability and wear control ability for different widths of strips or different rolling periods within the entire roiling campaign. At the same time, the roll gap stiffness and the crown control range by bending force with asymmetry self-compensating work rolls are greater than those with conventional work rolls in hot finishing mills. The ASR-C technology has been applied to production of the same strip-width 2.55 mm× 1280 mm wide non-oriented electrical steel strips in the 1700 mm hot strip mill of WlSCO for test. The industrial test results show that the rate of the measured strip crown less than 45μm is increased from 41.8 % to 98.2 %, the rate of the measured strip crown more than 53μm is decreased from 33.9 % to 1.8 %, and the self-maintenances of roll contours for ASR-C reach to 88 %. The schedule-free rolling （SFR） for a large number of the same width strip rolling campaigns is significantly achieved by the ASR-C technology with stable crown control ability and wear control ability.

关 键 词：热连轧机 板形控制 轧辊磨损 有限元分析 

分 类 号：TG333.7[金属学及工艺—金属压力加工]