Study on the Shifting Model of Edge Drop Control in Ultra-Wide 6-High Tandem Cold Rolling Mill

Abstract:

Edge drop is an important quality evaluating index for strip cross-section with the increasing of requirement for higher gauge accuracy to meet customer's demand. The mathematical model of roll shifting system plays an important role in controlling the edge drop on modern tandem cold rolling mills. Based on the explicit dynamic finite element method, a 3D finite element simulation model of rolls and strip is established for a large ultra-wide 6-high cold rolling mill with the developed EDW (edge drop control work roll) and the matched CVC intermediate roll to investigate the effect of work roll shift on edge drop of strip. Considering on the characteristics of EDW work rolls, equivalent area compensated method has been put forward to build the shifting model for edge drop control. The results indicated that the values of edge drop are less than 7μm by using the proper shifting model and the shifting model can be used to guide the practical production.

• Periodical: Advanced Materials Research (Volumes 452-453)
• Pages: 1257-1261
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.452-453.1257
• Online since: January 2012
• Authors: Jian Guo Cao, Yan Lin Wang, Hong Bo Li, Mu Qing Song, Sheng Hui Jia, Gui Liang Gong
• Keywords: Cold Rolling, Edge Drop Control, Finite Element Analysis (FEA), Mathematical Models, Strip

References

[1] John Pittner, Marwan A. Simaan. Control Engineering Practice. Vol. 16 (2008), p.1379~1390.

[2] Tateno Jun'ichi, Kenmochi Kazuhito, et al. J. Jpn. Soc. Technol. Plast. Vol. 40 (1999), p.653~657.

[3] Kitamura Kunio, Yarita Ikuo, et al. Kawasaki Steel Technical Repot. Vol. 27 (2003), p.5~12.

[4] Chi W M, Cao W, Wu B, et al. MINING & METALLURGY. Vol. 12 (2003), p.91~94.

[5] Zhang Y, Yang Q, Shao J, et al. J. Univ. Sci. Technol. Beijing. Vol. 31 (2009), p.1613~1615.

[6] Hartung H-G, Hollmann F W. Metall. Plant Technol. Int. Vol. 22 (1998), n. 2, p.80~88.

[7] Cao J G, Zhang J, Yang G H, et al. The Proceedings of the 10th International Conference on Steel Rolling, Beijing, China, Vol. 15-18(2010), pp.1065-1073.

[8] Cao J G, Mao N, Zhang J, et al. Iron and Steel. Vol. 8 (2008), n. 8, p.57~60.

[9] Cao J G, Qi J B, Zhang J, et al. J. Cent. South Univ. Vol. 39 (2008), n. 9, p.1011~1016.

[10] Cao J G, Zhang J, Zhang S J. Steel Rolling Equipments and Automatic, first ed. Chemical Industry Press, Beijing, pp.189-201(2010).

[11] Zeng P. Finite Element Analysis and Application, first ed. Tsinghua University Press, Beijing, pp.318-355(2004).

[12] Liu L Z, Liu X H, Wang G D. J. Northeast. Univ. Vol. 22 (2001), n. 3, p.327~330.

[13] Z Y Jiang, A K Tieu, X M Zhang, et al. J. Mater. Process. Technol. Vol. 140 (2003), p.542~547.

[14] Z Y Jiang, A K Tieu. Tribol. Int. Vol. 37 (2004), n. 2, p.185~191.

[15] A S Deshpande, K Srinvasa Murthy. J. Mater. Process. Technol. Vol. 197 (1997), p.712~717.

[16] Cao J G, Liu S J, Zhang J, et al. J. Mater. Process. Technol. Vol. 211 (2011), n. 11, p.1768~1775.

[17] Miguel A. Cavaliere, Marcela B. Computer and Structures. Vol. 79 (2001), p.2075~(2089).