Abstract
A finite element technique is developed to simulate the stresses and the strains during strip flattening to reveal the causes of the cutting-assisted loss of planeness of hot-rolled steel sheets processed in roller levelers. The loss of planeness is found to be caused by a nonuniform distribution of the flattening-induced longitudinal tensile stresses over the strip thickness and width. The application of tensile forces to a strip in a roller leveler decreases this nonuniformity and prevents loss of planeness in cutting.
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References
I. V. Nedorezov, Simulation of the Flattening of Rolled Products on Roller Levelers (AKVA-PRESS, Yekaterinburg, 2003).
A. I. Tselikov, P. I. Polukhin, V. M. Grebnik, et al., Machines and Units of Metallurgical Works. Vol. 3. Machines and Units of Rolling Shops: Tutorial (Metallurgiya, Moscow, 1988).
A. Kh. Vinokurskii and M. B. Tsalyuk, “Flattening of rectangular rolled products with variable mechanical properties and thickness,” Stal’, No. 12, 52–53 (1983).
V. N. Shinkin, “Calculation of the technological parameters of flattening a thin steel strip on a 15-roller Fagor Arrasate roller leveler,” Molodoi Uchenyi, No. 10(90), 361–366 (2015).
M. Grüber, M. Oligschläger, and G. Hirt, “Adjusting of roller levellers by finite element simulations including a closed-loop control,” Advanc. Mater. Res. 1018, 207–214 (2014).
B. A. Behrens, T. el Nadi, and R. Krimm, “Development of an analytical 3D-simulation model of the levelling process,” J. Mater. Proc. Technol. 211 (6), 1060–1068 (2011).
L. Madej, K. Muszka, K. Perzynski, J. Majta, and M. Pietrzyk, “Computer aided development of the levelling technology for flat products,” CIRP An.-Manufact. Technol. 60 (1), 291–294 (2011).
M. Grüber, M. Oligschläger, and G. Hirt, “The effect of the initial stress and strain state in sheet metals on the roller levelling process,” Key Eng. Mater. 651–653, 1023–1028 (2015).
R. Kaiser, T. Hatzenbiehler, B. Buchmayr, and T. Antretter, “Simulation of the roller straightening process with respect to residual stresses and the curvature trend,” Mater. Sci. Forum 768, 456–463 (2014).
N. Tadic and M. Mišovic, “Residual stresses in cold rolled narrow strips: experimental measurement— FEM simulation,” Metalurgija 13 (4), 251–257 (2007).
J. Marnette, B. Rolfeb, P. Hodgsona, and M. Weissa, “Numerical investigation on the effect of skin passing and roller leveling on the bending behaviour of mild steel,” in Proceedings of the 9th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (2014), Vol. 1567, pp. 452–455.
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Original Russian Text © E.A. Garber, N.L. Bolobanova, K.A. Trusov, 2018, published in Metally, 2018, No. 1, pp. 103–108.
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Garber, E.A., Bolobanova, N.L. & Trusov, K.A. Application of the Finite Element Method to Reveal the Causes of Loss of Planeness of Hot-Rolled Steel Sheets during Laser Cutting. Russ. Metall. 2018, 90–94 (2018). https://doi.org/10.1134/S0036029518010056
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DOI: https://doi.org/10.1134/S0036029518010056