Longitudinal buckling behavior in temper rolling of thin steel strips with delivery angle

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Longitudinal buckling behavior in temper rolling of thin steel strips with delivery angle

OKAZAKI Toshiro, KIMURA Yukio, KATSUMURA Tatsuro, UEOKA Satoshi

Abstract. The shape defect referred to as “longitudinal buckling” or “longitudinal buckle” tends to occur in temper rolling of double-reduced thin strips. In our previous study, we carried out an experiment to investigate the effect of the delivery angle on longitudinal buckling, and showed that longitudinal buckle completely disappears when the delivery angle exceeds a certain angle. The change of the buckling mode (number of longitudinal buckles) depending on the delivery angle calculated with a buckling model of a flat plate with curvature agreed with the experimental results under the condition of a delivery angle over 10°, but not under the condition of 10°. In this paper, it was found that the experimental results for the delivery angle of 0° could be explained by the Komori model, which assumes flat plate buckling of a length corresponding to the roll bite length. A FEM analysis of the limit buckling stress assuming constraint by the work roll proved that the limit buckling stress was larger than the estimated widthwise stress, indicating that initiation of buckling did not occur in the winding part on the work roll. On the other hand, a rolling experiment revealed that the buckling shape of many micro-waves generated near the roll bite could change in the winding part. These results suggest that longitudinal buckling begins around the roll gap and varies with the shape of the sheet wrapped around the work roll.

Keywords
Rolling, Temper Rolling, Skin Pass, Model Simulation, Buckling, Longitudinal Buckle

Published online 4/24/2024, 10 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: OKAZAKI Toshiro, KIMURA Yukio, KATSUMURA Tatsuro, UEOKA Satoshi, Longitudinal buckling behavior in temper rolling of thin steel strips with delivery angle, Materials Research Proceedings, Vol. 41, pp 822-831, 2024

DOI: https://doi.org/10.21741/9781644903131-90

The article was published as article 90 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] Komori K (1995) Analysis of cross and longitudinal buckle in sheet metal rolling. J. Jpn. Soc. Technol. Plast. 36(410):211-217
[2] Abdelkhalek S, Montmitonnet P, Legrand N, Buessler P (2011) Coupled approach for flatness prediction in cold rolling of thin strip. International Journal of Mechanical Sciences. (53):661-675. https://doi.org/10.1016/j.ijmecsci.2011.04.001
[3] Abdelkhalek S, Zahrouni H, Legrand N, Potier-Ferry M (2015) Post-buckling modeling for strips under tension and residual stresses using asymptotic numerical method. International Journal of Mechanical Sciences. (104):126-137. https://doi.org/10.1016/j.ijmecsci.2015.10.011
[4] Fischer F.D., Rammerstorfer F.G., Friedl N, Wieser W (2000) Buckling phenomena related to rolling and levelling of sheet metal. International Journal of Mechanical Sciences. (42):1887-1910. https://doi.org/10.1016/S0020-7403(99)00079-X
[5] Friedl N, Rammerstorfer F.G., Fischer F.D. (2000) Buckling of stretched strips. Computers and Structures. (78):185-190. https://doi.org/10.1016/S0045-7949(00)00072-9
[6] Coman C.D. (2009) The asymptotic limit of an eigenvalue problem related to the buckling of rolled elastic strips. Mechanics Research Communications. (36):826-832. https://doi.org/10.1016/j.mechrescom.2009.05.008
[7] Liu C, Wu H, He A, Jing F, Sun W, Shao J, Yao C (2023) Effect of Uneven Distribution of Material Property on Buckling Behavior of Strip during Hot Finishing Rolling. ISIJ Int. 63(1):102-110. https://doi.org/10.2355/isijinternational.ISIJINT-2022-221
[8] Tran D.C., Tardif N, Khaloui H.E., Limam A (2017) Thermal buckling of thin sheet related to cold rolling: Latent flatness defects modeling. Thin-Walled Structures. (113):129-135. https://doi.org/10.1016/j.tws.2016.12.010
[9] Tran D.C., Tardif N, Limam A (2015) Experimental and numerical modeling of flatness defects in strip cold rolling. International Journal of Solids and Structures. 69(70):343-349. https://doi.org/10.1016/j.ijsolstr.2015.05.017
[10] Kijima H, Kitahama M (2002) Longitudinal buckle in temper rolling of double reduced ultrathin strips. J. Jpn. Soc. Technol. Plast. 43(493):150-154
[11] Komori K (2008) Analysis of longitudinal buckling in temper rolling. Tetsu-to-Hagané. 94(10):70-77. https://doi.org/10.2355/tetsutohagane.94.452
[12] Okazaki T, Kimura Y, Kijima H, Miyake M (2020) Effect of Delivery Angle to Longitudinal Buckling in Temper Rolling of Thin Steel Strips. J. Jpn. Soc. Technol. Plast. 61(708):7-11. https://doi.org/10.9773/sosei.61.7
[13] Kijima H (2013) Influence of roll radius on contact condition and material deformation in skin-pass rolling of steel strip. J. Mater. Process. Technol. 10(213):1764-1771. https://doi.org/10.1016/j.jmatprotec.2013.04.011
[14] Domanti SA, Edwards WJ, Thomas PJ, Chefneux DIL (1994) Application of foil rolling models to thin steel strip and temper rolling. Proceedings of the Sixth International Rolling Conference. Dusseldorf:1764-1771
[15] Kijima H, Bay N (2007) Contact conditions in skin-pass rolling. Annals of CIRP 57. 1(56):301-306. https://doi.org/10.1016/j.cirp.2007.05.070
[16] Okazaki T, Kimura Y, Katsumura T, Miyake M (2022) Effect of Delivery Angle on Longitudinal Buckling in Temper Rolling of Thin Steel Strips. The Proceedings of Japanese Joint Conference for the Technology of Plasticity (128):37-38