连退过程带钢热瓢曲指数及其影响因素  

Strip hot buckling index and its influence factors in continuous annealing process

作　　者：王瑞[1,2] 白振华[1,2] 王云祥[1,2] 刘亚星[1,2] 钱承[1,2] 华长春[3] WANG Rui BAI Zhen-hua WANG Yun-xiang LIU Ya-xing QIAN Cheng HUA Chang-chun(National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, Hebei, China State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, China School of Electrical Engineering, Yanshan University, Qinhuangdao066004, Hebei, China)

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [2]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004 [3]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《钢铁》2016年第12期94-102,共9页Iron and Steel

基　　金：国家自然科学基金资助项目(51305387);河北省自然科学基金资助项目(E2016203385);重型机械协同创新计划课题资助项目(ZX01-20140400-05)

摘　　要：针对带钢连退过程中的热瓢曲问题,充分考虑到连退机组的设备与工艺特点,从内力、外力两方面因素分析了热瓢曲以及横向压应力的产生机理,阐述了热瓢曲的发生规律,首次提出了瓢曲指数的新概念,给出了相应的瓢曲临界条件,建立了一套适合于连退过程的带钢热瓢曲指数的计算模型,定量分析了不同工艺段内带钢瓢曲指数分布规律以及相同工艺段内来料板形、横向温差、炉辊辊型、摩擦因数、设定张力、通板速度等因素对带钢热瓢曲指数的影响,并将相关理论应用到生产实践,开发出了"连退机组通板过程带钢瓢曲预报软件",实现了对连退过程带钢瓢曲的在线预报,为瓢曲缺陷的预防和控制奠定了坚实的理论基础。In allusion to the problem of strip hot buckling in continuous annealing process（CAP）,taking the equipment and technological characteristics of CAP into account,the mechanism of hot buckling and transverse compressive stress from the factors of internal force and external force were analyzed. Basically,the study described the occurrence law of strip hot buckling and firstly put forward the concept of buckling index. Based on above results,the critical buckling condition was presented,and the calculation model of strip buckling index in continuous annealing process was established. The strip buckling index distribution in different processes and the influences of incoming strip shape,transverse temperature difference,roll profile,friction coefficient,tension setting,strip traveling speed on the strip hot buckling index in continuous annealing process were analyzed quantitatively. The related theory was applied to the production and practice. The predictive software of strip buckling in continuous annealing process was developed and the strip buckling was on-line predicted timely,which can lay a solid foundation for the prevention and control of strip buckling defects.

关 键 词：连续退火 热瓢曲 张力分布 瓢曲指数 计算模型 

分 类 号：TG161[金属学及工艺—热处理]