• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (12): 173-183.doi: 10.3901/JME.2018.12.173

• 材料科学与工程 • 上一篇    下一篇

冷轧毛化工作辊表面粗糙度衰减过程的试验与数学模型研究

尤媛1, 李洪波1, 夏春雨1, 孔宁1, 张杰1, 贾生晖2   

  1. 1. 北京科技大学机械工程学院 北京 100083;
    2. 宝钢股份武汉钢铁有限公司 武汉 430080
  • 收稿日期:2017-06-30 修回日期:2017-10-30 出版日期:2018-06-20 发布日期:2018-06-20
  • 通讯作者: 李洪波(通信作者),男,1982年出生,副教授,硕士研究生导师。主要研究方向为板带轧制过程中的力学行为与带钢板形、表面形貌控制等。E-mail:lihongbo@ustb.edu.cn
  • 作者简介:尤媛,女,1992年出生。主要研究方向为板带轧制过程中的轧辊与带钢表面形貌控制。E-mail:18810634110@163.com
  • 基金资助:
    国家自然科学基金(51404023,51604024)和国家十二五科技支撑计划(2015BAF30B01)资助项目。

Experimental and Mathematical Model Study of Attenuation Process of the Surface Roughness of Textured Work Rolls during Cold Rolling

YOU Yuan1, LI Hongbo1, XIA Chunyu1, KONG Ning1, ZHANG Jie1, JIA Shenghui2   

  1. 1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083;
    2. Bao Steel Wuhan Iron & Steel Co., Ltd., Wuhan 430080
  • Received:2017-06-30 Revised:2017-10-30 Online:2018-06-20 Published:2018-06-20

摘要: 为了分析影响冷轧带钢工作辊表面粗糙度衰减的因素,探究典型毛化工作辊表面粗糙度的衰减规律,得到可应用于生产现场的工作辊表面粗糙度衰减过程数学模型,针对9Cr2Mo材质的工作辊和Q345材质的带钢,在不同初始粗糙度、不同压力、不同润滑油体积分数以及不同轧制里程数等条件下,进行一系列模拟冷轧带钢轧制过程的毛化表面微观形貌磨损试验。试验结果表明:在试验水平范围内,初始粗糙度、轧制里程数、轧制力对表面粗糙度衰减过程的影响高度显著,其中初始粗糙度的影响最大,其次是轧制里程数,再次是轧制力;而润滑油体积分数无显著影响;从变化过程的数学描述上,工作辊表面粗糙度的衰减量与轧制里程数成指数关系,与初始粗糙度、试验力呈线性关系。以此为依据建立毛化工作辊表面粗糙度衰减过程数学模型,并与现场实测轧辊表面粗糙度数据进行对比,验证了模型的可行性与可靠性。

关键词: 表面形貌, 粗糙度, 冷轧, 毛化工作辊, 数学模型

Abstract: In order to analyze the factors affecting attenuation of the surface roughness of textured work rolls, find out the primary and secondary order of each factor, explore the attenuation process of surface topography of typical textured rolls and obtain the mathematical model which can be applied to the production site, a series of experiments specific to 9Cr2Mo work rolls and Q345 strips were carried out to simulate cold rolling process under the conditions of different initial roughness, different pressure, different lubricating liquid concentration and different rolling mileage. The results show that:within the test level, the initial roughness, test mileage and rolling force are highly significant for the attenuation process of roughness, while the lubricating oil concentration has no significant effect. Among these factors, the most important influencing factor is the initial roughness, the rolling mileage is followed by, and then is the rolling force. In terms of the mathematical description of the attenuation process, the attenuation of the roughness of roll surface has a linear relationship with initial roughness and test force, while it has a exponential relationship with the rolling mileage. Based on the experiment, the mathematical model of the attenuation process of the surface roughness of textured work rolls during cold rolling is established, and the feasibility and reliability of the model is confirmed by comparing with field data.

Key words: cold rolling, mathematical model, roughness, surface topography, textured work rolls

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