对热轧轧制力公式做麦克劳林级数展开，建立轧辊表面振纹再生振动的非线性动力学模型。以实际某轧机技术参数为例，应用数值仿真的方法对比了轧辊表面振纹形成前后轧机振动的状态，仿真表明轧辊表面振纹严重影响了带钢表面质量。同时，通过比较不同振纹深度对轧机振动的影响，得到了振纹深度与振纹激励、辊系振动强度的关系曲线和系统位移响应的分岔图。最后，针对轧辊表面振纹的形成和再生振动，提出两条抑制振纹的措施，现场试验和理论分析证明该方法具有良好的效果。
The rolling force formula was expansion with the Maclaurin series in the hot-rolling,meanwhile the non-linear dynamic model that the roll surface marks regenerated vibration was established.Taking the actual technical parameters of a rolling mill for example,the movement patterns of the system were compared with the application of numerical simulation method when the marks were on the roll surface or no;in the meanwhile,the simulation shows that the roll surface chatter marks a serious impact on the quality of the strip surface.Through the comparison of the influence of the different marks depth for the mill system,it obtains the relationship curves that are between marks depth and excitation,rolls vibration intensity and the bifurcation diagrams that are the system displacement response.Finally two measures are proposed to ease the marks in view of the roll surface marks formation and the influence of regenerated vibration,the field tests and the theoretical analysis all prove that the methods have a good effect.
参考文献
| [1] | X.-Q. Yan;Z.-H. Sun;W. Chen .Vibration control in thin slab hot strip mills[J].Ironmaking & Steelmaking: Products and applications,2011(4):309-313. |
| [2] | Swiatoniowski A;Bar A .Parametrical Excitement Vibration in Tandem Mills-Mathematical Model and Its Analysis[J].Journal of Materials Processing Technology,2009,134(02):214. |
| [3] | 闫晓强,史灿,曹曦,刘丽娜.CSP 轧机扭振与垂振耦合研究[J].振动、测试与诊断,2008(04):377-381. |
| [4] | 闫晓强,包淼,李永奎,范连东,王文瑞.热连轧FTSR轧机振动研究[J].工程力学,2012(02):230-234. |
| [5] | 王永涛,臧勇,吴迪平,秦勤.CSP轧机振纹振动致振机理研究[J].钢铁,2008(02):68-72. |
| [6] | 侯福祥,张杰,史小路,曹建国,谢建强,王聪.冷轧平整机振纹实测研究[J].北京科技大学学报,2007(06):613-616. |
| [7] | ZHONG Jue;YAN Hong-zhi;DUAN Jian et al.Industrial Experiments and Finds on Temper Rolling Chatter[J].Jour-nal of Material Processing Technology,2002,120(01):275. |
| [8] | Brian R. Hardwick .A Technique for the Detection and Measurement of Chatter Marks on Roll Surfaces[J].AISE Steel Technology,2003(4):64-70. |
| [9] | Niziol J;Swiatoniowski A.Numerical Analysis of the Vertical Vibrations of Rolling Mills and Their Negative Effect on the Sheet Quality[J].Journal of Materials Processing Technolo-gy,2006(162):546. |
| [10] | Bollinger L A;Rapsinski T S .Winding Reel Involvement in Temper Mill Chatter[J].Iron and Steel Engineer,1994,71(11):69. |
| [11] | Eugenio Brusa;Luca Lemma .Numerical and experimental analysis of the dynamic effects in compact cluster mills for cold rolling[J].Journal of Materials Processing Technology,2009(5):2436-2445. |
| [12] | SUN Jianliang,PENG Yan,LIU Hongmin,JIANG Guangbiao.Vertical Vibration of Moving Strip in Rolling Process Based on Beam Theory[J].中国机械工程学报,2009(05):680-687. |
| [13] | 刘浩然,侯东晓,时培明,刘飞.轧机辊系滞后非线性垂直振动系统的振动特性[J].机械工程学报,2011(13):65-71. |
| [14] | 周品.MATLAB数学计算与仿真应用[M].北京:电子工业出版社,2013 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%