摘要
为研究辊子间距对带材拉矫工艺的影响,理论分析了辊子间距和带钢曲率、弯曲辊载荷之间的解析关系。针对“两弯两矫”下的SPCC带钢拉矫工艺,结合有限元计算建立了弯曲辊载荷、带钢伸长率和辊子间距、辊子插入量之间的数学模型,研究了辊子间距对弯曲辊载荷、带钢伸长率的影响规律。结果表明:弯曲辊载荷、带钢伸长率均随辊子间距的增大而减小,且随着辊子插入量的增大,辊子间距对弯曲辊载荷、带钢伸长率的影响逐渐增大;在给定工艺参数空间内,变辊子间距可扩大带钢伸长率控制范围。基于“大张力小插入量”的工艺设计原则,研究了目标伸长率控制下的辊子间距设计方法,对比分析了设计辊子间距31.1 mm与产线辊子间距28.6 mm下的工艺参数,研究表明入口侧张力增大18.6%,弯曲辊载荷减小28.8%,通过辊子间距与工艺参数的组合设计,有效降低了弯曲辊载荷,有利于延长弯曲辊系的使用寿命。
To investigate the impact of roll distance on the strip leveling process,the theoretical relationship between roll distance,strip curvature,and bending roller load were analyzed.A mathematical model for the SPCC strip leveling process under“two bends and two levelings”based on finite element calculations were established.This model studied the influence of roll distance on the bendingroller load and strip elongation,the results show that the roller load and strip elongation decrease with the increase of the roll distance,and the influence of the roll distance on the bending roller load and strip elongation increases with the increase of the insertion amount of roll.In the given process parameter space,the control range of strip elongation can be expanded by changing the roll distance.Based on the process design principle of“high tension and small insertion amount”,the roll distance design method under the target elongation rate control was studied.The process parameters under the design roll distance of 31.1 mm and the production line roll distance of 28.6 mm were compared and analyzed,the research showed that the inlet side tension increased by 18.6%,and the bending roller load decreased by 28.8%.By combining distance with process parameters,the bending roller load was effectively reduced,which is beneficial to prolong the service life of the bending roller system.
作者
郑晓
张泽琳
张欢
王蕾
夏绪辉
ZHENG Xiao;ZHANG Zelin;ZHANG Huan;WANG Lei;XIA Xuhui(Key Laboratory of Metallurgical Equipment and Control Technology,Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)
出处
《轧钢》
北大核心
2024年第2期103-110,共8页
Steel Rolling
基金
国家自然科学基金项目(52275503)
材料成形与模具技术国家重点实验室开放课题研究基金项目(P2022-012)。
关键词
拉弯矫直
有限元计算
辊子间距
带材伸长率
辊子载荷
辊子插入量
tension leveling
finite element calculation
roll distance
strip elongation
roller load
insertion amount of roll
