Analysis of Thin Strip Shape and Profile in Cold Rolling: A Way to Improve Strip Profile and Mechanical Properties

Article Preview

Abstract:

Optimisation of the physical and mechanical properties of cold rolled thin strips is achieved by controlling the rolling parameters. In this paper, the factors affecting the low carbon steel thin strip profile of asymmetrical cold rolling have been studied at a speed ratio of 1.3 without lubricant applied. The effect of rolling parameters on the resulting microstructure was also investigated. It was found that under dry condition, work roll shifting and work roll cross angle can improve the strip profile, and the improvement is more significant with an increase of work roll cross angle rather than that of work roll shifting. A slight change in microstructure was evident with increasing work roll shifting values. In addition, effects of rolling parameters on the strip profile and microstructure have also been discussed.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

849-854

Citation:

Online since:

November 2016

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2017 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Z.Y. Jiang, D. Wei, and A. Tieu, Analysis of cold rolling of ultra-thin strip, Journal of Materials Processing Technology, 209(9) (2009) 4584-4589.

DOI: 10.1016/j.jmatprotec.2008.10.035

Google Scholar

[2] Z.Y. Jiang, H.T. Zhu, A.K. Tieu and W.H. Sun, Modelling of work roll edge contact in thin strip rolling, Journal of materials processing technology, 155 (2004) 1280-1285.

DOI: 10.1016/j.jmatprotec.2004.04.293

Google Scholar

[3] Z.Y. Jiang, A.K. Tieu, X.M. Zhang, C. Lu, W.H. Sun, Finite element simulation of cold rolling of thin strip, Journal of Materials Processing Technology, 140 (2003) 542-547.

DOI: 10.1016/s0924-0136(03)00832-x

Google Scholar

[4] A. Nadai, Plasticity, McGraw-Hill, New York, NY, (1931).

Google Scholar

[5] J. Archard, and K. Baglin, Nondimensional Presentation of Frictional Tractions in Elastohydrodynamic Lubrication—Part I: Fully Flooded Conditions, Journal of Tribology, 97(3) (1975) 398-410.

DOI: 10.1115/1.3452617

Google Scholar

[6] H.G. Elrod and D.E. Brewe, Thermohydrodynamic analysis for laminar lubricating films. NASA STI/Recon Technical Report N, 87 (1986) 11124.

Google Scholar

[7] Ginzburg, V.B. and R. Ballas, Flat rolling fundamentals, CRC Press, (2000).

Google Scholar

[8] J.S. Wang, Z.Y. Jiang, A.K. Tieu, X.H. Liu and D.G. Wang, Analysis of thrust force in a work roll shifting mill, International journal of mechanical sciences, 48(10) (2006) 1095-1102.

DOI: 10.1016/j.ijmecsci.2006.05.007

Google Scholar

[9] K. Kitamura, I. Yarita, N. Suganuma, T. Nakanishi and K. Toyoshima, Edge-drop control of hot and cold rolled strips by a tapered-crown work roll shifting, Kawasaki Steel Technical Report(Japan), 27 (1992) 5-12.

Google Scholar

[10] T. Hiruta, I. Akagi, and N. Mizushima, Development of advanced transverse thickness profile control of thin hard steel strips at tandem cold rolling mill, Kawasaki Steel Technical Report(Japan), 37 (1997) 19-24.

Google Scholar

[11] R. Guo, Characteristics of rolling mills with roll shifting, Iron and Steel Engineer, 65(12) (1988) 45-54.

Google Scholar

[12] V.B. Ginzburg, Roll crossing and shifting system, Google Patents, (1997).

Google Scholar

[13] V.B. Ginzburg, High-Quality Steel Rolling: Theory and Practice, Marcel Dekker Inc, New York, (1993).

Google Scholar

[14] H. Gao, S.C. Ramalingam, G.C. Barber and G. Chen, Analysis of asymmetrical cold rolling with varying coefficients of friction, Journal of Materials Processing Technology, 124(1) (2002) 178-182.

DOI: 10.1016/s0924-0136(02)00131-0

Google Scholar

[15] Y.G. Ko, Microstructure evolution and mechanical properties of severely deformed Al alloy processed by differential speed rolling, Journal of Alloys and Compounds, 536 (2012) S122-S125.

DOI: 10.1016/j.jallcom.2011.12.009

Google Scholar

[16] W.J. Kim, S.J. Yoo, H.T. Jeong, D.M. Kim, B.H. Choe and J.B. Lee, Effect of the speed ratio on grain refinement and texture development in pure Ti during differential speed rolling, Scripta Materialia, 64(1) (2011) 49-52.

DOI: 10.1016/j.scriptamat.2010.09.002

Google Scholar