CSP板形控制及工作辊磨损模型研究
摘要
板形是带钢产品的主要质量指标之一,也是目前最受用户关注的质量指标。因此,板形控制的研究不仅具有重要的理论意义,而且具有很大的实用价值。本文介绍了目前常用的板形控制手段,重点介绍了CVC技术及其板形控制原理,并对CVC轧辊的辊形曲线进行了数学解析,分析得到了轧辊的轴向移动量与轧辊凸度的关系。
目前国内钢铁企业板形控制水平无法给出一个衡量标准,板形的质量标准执行困难,本文提出了一种利用现有轧机控制系统实测的大量板形质量信息执行板形标准的思路,并在此基础上开发了带钢板形质量统计分析软件,该软件已经成功地用于涟钢热轧CSP带钢板形质量评价。
轧辊磨损是板形控制模型中不可忽视的重要部分,但作为板形控制模型一部分的轧辊磨损预报模型,至今尚无精确的理论模型可利用,轧辊磨损的计算基本都采用各种经验公式。这些公式的建立,缺乏理论依据,各自存在着不同的缺点和不足,直接影响了轧辊磨损的预报精度,进而影响板形的控制。本文在大量工作辊实测辊形数据的基础上建立了一个CVC工作辊磨损量的计算模型,模型计算结果和实测结果吻合很好。
The Profile of the hot rolling strip is one of the major quality parameters, and it is also the most concerned quality index. So the research of shape control is important from the view of both theory and production. This paper introduced the major strategy of shape control ,especially the CVC technology and its principle of shape control. The analysis of CVC work roll principle has been conducted and the mathematical model describing the relationship between shift position and roll crown has been obtained in the thesis.
At present, a standard to evaluate the level of shape control has not been given in iron and steel companies. So it is hard to evaluate the control level of shape control in production. A method of executing strip shape standard by using measured strip shape quality data has been given in the paper to solve the difficulty of executing strip shape standard in iron and steel plants. On the basis of above idea, the software for appraising the strip shape in practice has been developed and applied in the CSP hot strip plant, Lianyuan Iron and steel company.
The wear model for work rolls is the important part in shape control models. But so far there have had no accurate theory models to utilize in shape control. Various experience formulae to calculate the work roll wear are used in production. These experience formulae have their special deficiencies, which influence the prediction precision of work roll wear and control effectiveness of shape control. A theoretical calculating model of work roll wear for CVC rolls has been obtained on the basis of a lot of measured data in production plant. The calculating results are in good agreement with experiment data.
目前国内钢铁企业板形控制水平无法给出一个衡量标准,板形的质量标准执行困难,本文提出了一种利用现有轧机控制系统实测的大量板形质量信息执行板形标准的思路,并在此基础上开发了带钢板形质量统计分析软件,该软件已经成功地用于涟钢热轧CSP带钢板形质量评价。
轧辊磨损是板形控制模型中不可忽视的重要部分,但作为板形控制模型一部分的轧辊磨损预报模型,至今尚无精确的理论模型可利用,轧辊磨损的计算基本都采用各种经验公式。这些公式的建立,缺乏理论依据,各自存在着不同的缺点和不足,直接影响了轧辊磨损的预报精度,进而影响板形的控制。本文在大量工作辊实测辊形数据的基础上建立了一个CVC工作辊磨损量的计算模型,模型计算结果和实测结果吻合很好。
The Profile of the hot rolling strip is one of the major quality parameters, and it is also the most concerned quality index. So the research of shape control is important from the view of both theory and production. This paper introduced the major strategy of shape control ,especially the CVC technology and its principle of shape control. The analysis of CVC work roll principle has been conducted and the mathematical model describing the relationship between shift position and roll crown has been obtained in the thesis.
At present, a standard to evaluate the level of shape control has not been given in iron and steel companies. So it is hard to evaluate the control level of shape control in production. A method of executing strip shape standard by using measured strip shape quality data has been given in the paper to solve the difficulty of executing strip shape standard in iron and steel plants. On the basis of above idea, the software for appraising the strip shape in practice has been developed and applied in the CSP hot strip plant, Lianyuan Iron and steel company.
The wear model for work rolls is the important part in shape control models. But so far there have had no accurate theory models to utilize in shape control. Various experience formulae to calculate the work roll wear are used in production. These experience formulae have their special deficiencies, which influence the prediction precision of work roll wear and control effectiveness of shape control. A theoretical calculating model of work roll wear for CVC rolls has been obtained on the basis of a lot of measured data in production plant. The calculating results are in good agreement with experiment data.
引文
[1] 严洪凯.宽带钢热轧精轧板形控制与 CVC 技术研究.北京科技大学硕士学位论文,1999.
[2] 杨广,于世界.热轧宽带钢生产工艺技术的新发展和板形控制技术.第六届轧钢学术大会论文集,1996.10
[3] R.R.Judd.Surface Deterioration of Grain Iron Work Rolls in the First Stands of a hot Strip Mill Finishing Train.AISE Year Book,1979: 65~74.
[4] R.R.Somer et al.Verification and Applications of a Model for Predicting Hot Strip Profile Crown and Flatness.AISE Year Book,1984: 441~450.
[5] Gilbertson W F.Hot Rolled Strip Abnormalities Leading to Ridge in Cold Reduced Sheeth and Tinplate.Journal of the Iron and Steel Institute, June 1965: 533~5611
[6] Nakanishi T.Application of Work Roll Shift Mill HCW to Hot Strip and Plate Rolling.Hitathieview,1985,3 4(4):153~160.
[7] 邹家祥.轧辊磨损预报计算[J].钢铁,1986,21 (7): 23~27.
[8] 孙林.中厚板精轧机板形控制的研究.北京科技大学博士学位论文,2002
[9] 王国栋.板形控制和板形理论[M].北京:冶金工业出版社,1986,11.
[10] Ginzburg B.High quality steel rolling:theory and practice [R].Marcel Dekker Inc,1993.
[11] 刘文斌.首钢 2160 热轧机板形控制方法探讨.重型机械科技,2002,1.
[12] Shohet KN , N.A.Townsend.Flatness Control in Plate Rolling.Journal of the Iron and Steel Institute,1971,209(10):709.
[13] 姜正连,CVC 轧机辊型设计原理和控制模型的探讨,《钢铁研究学报》,1990.
[14] 张清东,CVC 四辊冷轧机板形控制策略,北京科技大学学报,1996.
[15]. W.Bald,et al.Continuously Variable Crown(CVC) Rolling, AISE Year Book,1987.
[16] 符寒光.高速钢轧辊研究的现状及展望[J].钢铁,2000,35(5): 67~73.
[17] 朱洪涛,王哲 ,刘相华,等.轧辊磨损模型研究.钢铁研究,1999,108(5):38~41.
[18] 孙家抠.金属的磨损.北京:冶金工业出版社,1982.
[19] George Sachs,James V Latorre.Roll Wear in Finishing Trains of Hot Strip Mills.Iron and Steel Engineer ,1961,38(12):71~92
[20] S Spuzie et al. Friction Design of Experiment Applied to A Wear Simulation.Wear , 1997 , 212: 131~139
[21] J.霍林.摩擦学原理.上海交通大学摩擦学教研室译.北京:机械工业出版社,1981.
[22] 克拉盖尔斯基.摩擦磨损计算原理.北京:机械工业出版社,1982.
[23] S Spuzic, K N Strafford, C Subramanian, et al.Wear of Hot Rolling Mill Rolls: an Overview.Wear, 1994, (176): 261~271.
[24] 王久彬,李庆春.高铬铸铁轧辊的滚动磨损行为[[J].钢铁研究,1994,2:24~27.
[25] 王久彬,李庆春高铬铸铁轧辊材质的热疲劳行为[J].鞍钢技术,1995,8:30~32.
[26] 林大超,热轧轧辊表面龟裂的分析[J].四川冶金,1991,(2):72~75.
[27] R.V.Willianms,Genefer M Boxall.Roll Surface Deterioration in Hot Strip Mills.Iron and Steel Institute,1965,(4):369~377.
[28] 郭新成,曾庆梅,束德林.几种轧辊材料的热磨损和疲劳性能[J].钢铁,1992,27(11):38~41.
[29] Osamu KAT0.Mechanisms of surface deterioration of roll for hot strip rolling.ISIJ International,1992,32(11): 1216~1220.
[30] 韩丽琦.热连轧机轧制压力和轧辊磨损预报方法研究.北京科技大学博士学位论文,2 001,4.
[31] 丁修.轧制过程自动化[M] .冶金工业出版社,北京,2005.
[32] 赵先界. CVC 技术在 1850mm 铝冷轧机上的应用.铝加工. 1998,21(6):8~11.
[33] 陈杰、周鸿章、钟掘. CVC 四辊冷轧机工作辊辊型设计.铝合金加工技术,2000,28(3):12~13.
[34] 张杰、陈先霖、徐耀寰等.四辊轧机轴向位移变凸度辊型的研究,钢铁研究学报.1993,5(2):26~30.
[35] 姜连正、朱伏先、王国栋等. CVC 轧机板形控制特性的实验研究. 钢铁,1991,26(5):31~35.
[36] 曹建国,顾云舟,张杰,等.1700mm 冷轧带钢轧机板形控制能力研究[J] .钢铁研究,2002,(3):16~19。
[37] 刘炳文,许蔓舒. Visual Basic 程序设计教程[M] .北京, 清华大学出版社 2000.
[38] 孙一康.板带热连轧数学模型基础[M].北京:冶金工业出版社 ,1979.123.
[39] 曹建国,陈先霖,张清东.宽带钢热轧制轧辊磨损与辊形评价[J] .北京科技大学学 报,1999.21(2):188-190.
[40] 陈连生、连家创. 热带钢轧机轧辊磨损研究.钢铁,2001,36(1):66~69。
[41] Sven-Erik Lundberg.Therese Gustafsson.The Influence of Rolling Temperature on Roll Wear, Investigated in A New High Temperature Test.Rig.J Mater Process Technol ,1994,(42):239~291
[42] 孔祥伟,史静等.热带钢轧机轧辊磨损预测.2002,23(8):790~792
[43] Stevens P G.Increasing work roll life by improved roll cooLing practice[J].Journal of the Iron and Steel Institute, 1971:1~11.
[44] 蔡建平,苏红,等.SPSS 实用教程.电子工业出版社.
[2] 杨广,于世界.热轧宽带钢生产工艺技术的新发展和板形控制技术.第六届轧钢学术大会论文集,1996.10
[3] R.R.Judd.Surface Deterioration of Grain Iron Work Rolls in the First Stands of a hot Strip Mill Finishing Train.AISE Year Book,1979: 65~74.
[4] R.R.Somer et al.Verification and Applications of a Model for Predicting Hot Strip Profile Crown and Flatness.AISE Year Book,1984: 441~450.
[5] Gilbertson W F.Hot Rolled Strip Abnormalities Leading to Ridge in Cold Reduced Sheeth and Tinplate.Journal of the Iron and Steel Institute, June 1965: 533~5611
[6] Nakanishi T.Application of Work Roll Shift Mill HCW to Hot Strip and Plate Rolling.Hitathieview,1985,3 4(4):153~160.
[7] 邹家祥.轧辊磨损预报计算[J].钢铁,1986,21 (7): 23~27.
[8] 孙林.中厚板精轧机板形控制的研究.北京科技大学博士学位论文,2002
[9] 王国栋.板形控制和板形理论[M].北京:冶金工业出版社,1986,11.
[10] Ginzburg B.High quality steel rolling:theory and practice [R].Marcel Dekker Inc,1993.
[11] 刘文斌.首钢 2160 热轧机板形控制方法探讨.重型机械科技,2002,1.
[12] Shohet KN , N.A.Townsend.Flatness Control in Plate Rolling.Journal of the Iron and Steel Institute,1971,209(10):709.
[13] 姜正连,CVC 轧机辊型设计原理和控制模型的探讨,《钢铁研究学报》,1990.
[14] 张清东,CVC 四辊冷轧机板形控制策略,北京科技大学学报,1996.
[15]. W.Bald,et al.Continuously Variable Crown(CVC) Rolling, AISE Year Book,1987.
[16] 符寒光.高速钢轧辊研究的现状及展望[J].钢铁,2000,35(5): 67~73.
[17] 朱洪涛,王哲 ,刘相华,等.轧辊磨损模型研究.钢铁研究,1999,108(5):38~41.
[18] 孙家抠.金属的磨损.北京:冶金工业出版社,1982.
[19] George Sachs,James V Latorre.Roll Wear in Finishing Trains of Hot Strip Mills.Iron and Steel Engineer ,1961,38(12):71~92
[20] S Spuzie et al. Friction Design of Experiment Applied to A Wear Simulation.Wear , 1997 , 212: 131~139
[21] J.霍林.摩擦学原理.上海交通大学摩擦学教研室译.北京:机械工业出版社,1981.
[22] 克拉盖尔斯基.摩擦磨损计算原理.北京:机械工业出版社,1982.
[23] S Spuzic, K N Strafford, C Subramanian, et al.Wear of Hot Rolling Mill Rolls: an Overview.Wear, 1994, (176): 261~271.
[24] 王久彬,李庆春.高铬铸铁轧辊的滚动磨损行为[[J].钢铁研究,1994,2:24~27.
[25] 王久彬,李庆春高铬铸铁轧辊材质的热疲劳行为[J].鞍钢技术,1995,8:30~32.
[26] 林大超,热轧轧辊表面龟裂的分析[J].四川冶金,1991,(2):72~75.
[27] R.V.Willianms,Genefer M Boxall.Roll Surface Deterioration in Hot Strip Mills.Iron and Steel Institute,1965,(4):369~377.
[28] 郭新成,曾庆梅,束德林.几种轧辊材料的热磨损和疲劳性能[J].钢铁,1992,27(11):38~41.
[29] Osamu KAT0.Mechanisms of surface deterioration of roll for hot strip rolling.ISIJ International,1992,32(11): 1216~1220.
[30] 韩丽琦.热连轧机轧制压力和轧辊磨损预报方法研究.北京科技大学博士学位论文,2 001,4.
[31] 丁修.轧制过程自动化[M] .冶金工业出版社,北京,2005.
[32] 赵先界. CVC 技术在 1850mm 铝冷轧机上的应用.铝加工. 1998,21(6):8~11.
[33] 陈杰、周鸿章、钟掘. CVC 四辊冷轧机工作辊辊型设计.铝合金加工技术,2000,28(3):12~13.
[34] 张杰、陈先霖、徐耀寰等.四辊轧机轴向位移变凸度辊型的研究,钢铁研究学报.1993,5(2):26~30.
[35] 姜连正、朱伏先、王国栋等. CVC 轧机板形控制特性的实验研究. 钢铁,1991,26(5):31~35.
[36] 曹建国,顾云舟,张杰,等.1700mm 冷轧带钢轧机板形控制能力研究[J] .钢铁研究,2002,(3):16~19。
[37] 刘炳文,许蔓舒. Visual Basic 程序设计教程[M] .北京, 清华大学出版社 2000.
[38] 孙一康.板带热连轧数学模型基础[M].北京:冶金工业出版社 ,1979.123.
[39] 曹建国,陈先霖,张清东.宽带钢热轧制轧辊磨损与辊形评价[J] .北京科技大学学 报,1999.21(2):188-190.
[40] 陈连生、连家创. 热带钢轧机轧辊磨损研究.钢铁,2001,36(1):66~69。
[41] Sven-Erik Lundberg.Therese Gustafsson.The Influence of Rolling Temperature on Roll Wear, Investigated in A New High Temperature Test.Rig.J Mater Process Technol ,1994,(42):239~291
[42] 孔祥伟,史静等.热带钢轧机轧辊磨损预测.2002,23(8):790~792
[43] Stevens P G.Increasing work roll life by improved roll cooLing practice[J].Journal of the Iron and Steel Institute, 1971:1~11.
[44] 蔡建平,苏红,等.SPSS 实用教程.电子工业出版社.