中厚板瓢曲浪形的仿真分析与抑制措施研究
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摘要
为了解决某3 450mm生产线中厚板瓢曲浪形缺陷问题,本文应用ANSYS软件对中厚板各种浪形瓢曲缺陷进行了有限元仿真模拟计算,采用温度场对宽度方向上纵向延伸不一致的情况进行了模拟,获得了各种浪形屈曲模态,并与现场实际的板形瓢曲浪形进行了对比,两者符合较好;同时,获得了各种不同浪形的屈曲临界载荷条件和屈曲临界波长,并对中浪和边浪的主要影响因素进行了分析。在有限元仿真计算的基础上对现场的工艺措施进行了改进,调整了机组工作辊辊型和弯辊力使用策略,有效地减少了机组存在的中浪和边浪问题。
In order to solve the plate buckling wave problems in a 3 450 mm mill,the different kinds of plate buckling wave defects were simulated with finite element software ANSYS.The condition that temperature field in longitudinal extension is different along width was adopted in simulation,and various buckling wave modes were obtained.After comparing with the plate buckling waves in the practical sites,the similarity was well.The critical load condition and critical buckling wave length of various waves are obtained.And the main factors caused for central wave and edge wave were analyzed.On the basis of finite element simulation,the process measures in the production site were improved,and the using policy of work roll contour and roll bending force were adjusted,effectively reduced the central wave and edge wave problems existed in roll train.
In order to solve the plate buckling wave problems in a 3 450 mm mill,the different kinds of plate buckling wave defects were simulated with finite element software ANSYS.The condition that temperature field in longitudinal extension is different along width was adopted in simulation,and various buckling wave modes were obtained.After comparing with the plate buckling waves in the practical sites,the similarity was well.The critical load condition and critical buckling wave length of various waves are obtained.And the main factors caused for central wave and edge wave were analyzed.On the basis of finite element simulation,the process measures in the production site were improved,and the using policy of work roll contour and roll bending force were adjusted,effectively reduced the central wave and edge wave problems existed in roll train.
引文
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[2]曹开宸,郝小强,王绍松,等.中板轧机生产厚6mm钢板板形稳定性控制[J].轧钢,2011,28(3):51.
[3]李群,王志勇,田鹏,等.中厚板TMCP工艺品种钢板形控制策略研究[J].轧钢,2014,31(5):20.
[4]杨荃.冷轧带钢屈曲理论与板形控制目标的研究[D].北京:北京科技大学,1992.
[5]杨荃,陈先霖.轧制带材的瓢曲生成路径[J].北京科技大学学报,1994,16(1):53.
[6]陈兵,何名成,杨洋.冷轧带钢屈曲失稳限的计算方法研究[J].轧钢,2016,33(1):27.
[7]林振波,连家创.冷轧带材临界屈曲问题的有限条法研究[J].东北重型机械学院学报,1995,19(4):288.
[8]边宇虹,刘宏民.求解带材轧后大挠度屈曲变形的一个通用方法[J].机械工程学报,1994,30(S):21.
[9]郭乙木,陶伟明,庄茁.线性与非线性有限元及其应用[M].北京:机械工业出版社,2003.
[10]王勖成.有限单元法[M].北京:清华大学出版社,2003.
[11]张祖江,戴杰涛,戴文笠,等.韶钢3 450mm中厚板轧机板凸度控制的研究[J].轧钢,2015,32(3):67.