An analytic model based on ANSYS/LS-DYNA has been developed on the cold rolling process for Q235 steel rebar with 12 mm in diameter. The elastic-plastic finite element method (FEM) and the cold deformation resistance model of Q235 steel were adopted in this model. Deformation uniformity of the final product has been analyzed using this model. The results indicate that the uniformity of the final product is obtained only as the centerline of the bending rolls is vertical to the centerline of the driven roll and parallel to the centerline of the drive roll in the whole rolling process. Besides, the number of the bending rolls must even realize the continuous bending and reverse bending process. Also, the number of the bending rolls must match the deformation degree of the workpiece in the cold rolling process. The validity of this finite element model was verified by the size and distribution of grains from the billet to the rebar in a practical cold rolling process.
Abstract
An analytic model based on ANSYS/LS-DYNA has been developed on the cold rolling process for Q235 steel rebar with 12 mm in diameter. The elastic-plastic finite element method (FEM) and the cold deformation resistance model of Q235 steel were adopted in this model. Deformation uniformity of the final product has been analyzed using this model. The results indicate that the uniformity of the final product is obtained only as the centerline of the bending rolls is vertical to the centerline of the driven roll and parallel to the centerline of the drive roll in the whole rolling process. Besides, the number of the bending rolls must even realize the continuous bending and reverse bending process. Also, the number of the bending rolls must match the deformation degree of the workpiece in the cold rolling process. The validity of this finite element model was verified by the size and distribution of grains from the billet to the rebar in a practical cold rolling process.
关键词
变形均匀性 /
Q235螺纹钢 /
有限元方法 /
冷轧 /
机械除鳞
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Key words
deformation uniformity /
Q235 steel rebar /
finite element method /
cold rolling /
mechanical descaling
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参考文献
[1] Yue C X, Zhang L W, Ruan J H, et al. Modelling of recrystallization behavior and anstenite grain size evolution during the hot rolling of GCr15 rod [J]. Applied Mathematical Modelling, 2010, 34 (9): 2644.
[2] Yang H, Guo L G, Zhan M, et al. Research on the influence of material properties on cold ring rolling processes by 3D-FE numerical simulation [J]. Journal of Materials Processing Technology, 2006, 177 (1-3): 634.
[3] Liu X H, Shi X, Li S Q, et al. FEM analysis of rolling pressure along strip width in cold rolling process [J]. Journal of Iron and Steel Research, International, 2007, 14 (5): 22.
[4] Shuai M R, Liu S B, Gao C M, et al. Finite element simulation of cold-rolling process of shaped steel tube for driving shaft [J]. Journal of Iron and Steel Research, International, 2010, 17 (8): 25.
[5] Zhou J H, Guan K Z.Resistance of metal to plasticity [M]. Beijing: China Machine Press, 1989: 218-222.
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脚注
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