锻压技术

精冲带钢冷轧温度传递与成形变形计算方法

英文标题：Calculation method of heat transfer and deformation in cold rolling for fine stamping strip steel

作者：郑九华常欣侯加林马正伦范殿明

关键词：冷轧轧辊带钢热变形有限元法

分类号：TG335

出版年,卷(期):页码：2018,43(4):163-168

摘要：

针对精冲带钢冷轧工艺变形会受到轧辊与带钢发热影响的问题，分析了精冲带钢冷轧工艺研究的特点，采用前人实测的辊面温度分布数据，建立轧辊与带钢的网格模型，提出一种结构热量传递、弹性段热膨胀和冷轧过程弹塑性动力学变形的集成计算方法，得到了轧辊与带钢在自身发热温度下的结构应力和变形分布。硬化状态下的304不锈钢带钢的单道次冷轧实例研究表明：结构应力较大的区域与温度变化梯度较大的区域是一致的；带钢横截面中部存在较大的凸起变形，而横截面两端会出现毛刺。研究结果验证了该集成计算方法的可行性，为实际冷轧工艺的数字化设计提供了方法基础。

For the effects of roller and strip heating on the deformation in the cold rolling of fine stamping strip steel, the cold rolling process characteristics of fine stamping strip steel were analyzed, and the grid model of roller and strip steel was built based on the preceding tested data of temperature distribution on the roller surface. Then, an integrated calculation method including structural heat transfer, thermal expansion of elastic segment and elastic-plastic dynamic deformation in the cold rolling process was proposed, and the structural stress and deformation distributions at self-heating temperature of roller and strip steel were obtained. The single-pass cold rolling example of 304 stainless steel strip in the harden state shows that the areas with larger structural stress coincide with the areas with greater temperature gratitude, and the central area at the cross section of strip steel has a large convex deformation and its two ends have burrs. From the above results, it validates the feasibility of the integrated calculation method, which provides a methodological basis for the digital design of actual cold rolling process.

基金项目：

国家国际科技合作专项资助（2015DFR70090）

郑九华（1972-），男，博士，副教授；E-mail：zjh1882@163.com

参考文献：

[1]洪慧萍, 康永林.椭圆孔型轧制合金钢方坯三维弹塑性有限元模拟[J].北京科技大学学报, 2003,25(2): 171-173.

Hong H P, Kang Y L. Three dimensional elastoplastic finite element simulation on the hot-rolling in oval pass of a sheet billet [J]. Journal of University of Science and Technology Beijing, 2003, 25(2): 171-173.

[2]Xiong S W, Liu X H, Wang G D, et al. A three-dimensional finite element simulation of the vertical-horizontal rolling process in the width reduction of slab[J]. Journal of Materials Processing Technology, 2000, 101(1-3): 146-151.

[3]王赤, 应保胜, 田德旺. 基于拉格朗日公式的冷轧有限元分析[J]. 锻压技术, 2006, 31(5): 29-32.

Wang C, Ying B S, Tian D W. Finite element modeling of cold rolling base on Lagrangian formulations [J]. Forging & Stamping Technology, 2006, 31(5): 29-32.

[4]尹业宏，黄旺，邓绪水，等. 基于Deform-3D的冷轧钛管有限元分析[J]. 锻压技术, 2014, 39(9): 122-127.

Yin Y H，Huang W，Deng X S，et al. Finite element analysis of cold rolled titanium tube based on Deform-3D [J]. Forging & Stamping Technology, 2014, 39(9): 122-127.

[5]Hwang S M, Shiro Kobayashi. Preform design in plane-strain rolling by the finite-element method[J]. International Journal of Machine Tool Design and Research, 1984, 24(4):253- 266.

[6]Jiang Z Y, Tieu A K. A 3-D finite element method analysis of cold rolling of thin strip with friction variation[J]. Key Engineering Materials , 2003 , 233-236 (2):419-424.

[7]骆无思，张宝红，张治民，等. 楔形长板辊轧过程中工艺参数的模拟优化[J]. 锻压技术, 2017, 42(5): 25-29.

Luo W S，Zhang B H，Zhang Z M，et al. Simulation optimization on process parameters of wedge-shaped long board in the rolling process [J]. Forging & Stamping Technology, 2017, 42(5): 25-29.

[8]刘涛. 带钢冷轧轧辊热行为及其补偿策略研究[D]. 秦皇岛：燕山大学，2006.

Liu T. Study on Thermal Behavior of Rollers & the Compensation Method in Cold Rolling [D]. Qinhuangdao: Yanshan University, 2006.

[9]程其华，徐忠建.冷连轧机工作辊温度场与热凸度模型的研究[J].机械工程与自动化, 2008, (3): 25- 27.

Cheng Q H, Xu Z J. Research of the model about temperature field and hot crown of working roll of tandem cold mill [J]. Mechanical Engineering & Automation, 2008, (3): 25-27.

[10]文杰，张清东，饶志雄，等. 四辊冷连轧机高强钢板形控制技术研究[J]. 轧钢，2010, 27(6): 28-31.

Wen J, Zhang Q D, Rao Z X, et al. Flatness control technique for high strength strip on 4-h tandem cold mill [J]. Steel Rolling, 2010, 27(6): 28-31.

[11]于凤琴，杜凤山，张国良. 冷连轧机工作辊热辊型的有限元研究[J]. 重型机械，2012, (5): 62-66.

Yu F Q, Du F S, Zhang G L. Finite element study on thermal profile of work roll in cold tandem mill [J]. Heavy Machinery, 2012, (5): 62-66.

[12]杜凤山, 于辉, 黄华贵, 等. 复杂工况下连轧过程数值仿真系统研究[J]. 武汉科技大学学报，2010,33(3): 238-243.

Du F S, Yu H, Huang H G, et al. Numerical simulation of continuous rolling under complicated working conditions [J]. Journal of Wuhan University of Science and Technology, 2010, 33(3): 238-243.

[13]Kaviany M. Essentials of Heat Transfer: Principles, Materials, and Applications [M]. Cambridge: Cambridge University Press, 2011.

[14]李营，李晓彬，吴卫国，等. 基于修正CS 模型的船用低碳钢动态力学性能研究[J]. 船舶力学，2015,19(8): 944-949.

Li Y, Li X B, Wu W G, et al. Dynamic mechanical behavior of low-carbon steel on improved Cowper-Symonds models [J]. Journal of Ship Mechanics, 2015, 19(8): 944-949.

[15]郑文光，董德元. 窄带钢异步冷轧轧辊热凸度及带钢同板差应用研究[J]. 包头钢铁学院学报, 1993, 12(3): 50-56.

Zheng W G, Dong D Y. Application research for roll′s thermal crown and thickness distribution across the strip in asymmetric rolling [J]. Journal of Baotou University of Iron and Steel Technology, 1993, 12(3): 50-56.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】