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| Finite element simulation of deformation in forming process of st52-3G iron-based plate |
| LI Xiu-min1，HAO Zhi-qin2，QI Cui-fen1，SHI Yong-liang1，YANG Xiao-cai1，CHEN Cun-guang3 |
（1. Department of Materials Engineering， Hebei College of Industry and Technology， Shijiazhuang 050000， China
2. Tangshan Company Technology Center， Hebei Iron and Steel Group， Tangshan 063016， China
3. Advanced Material & Technology Institute， University of Science and Technology Beijing， Beijing 100083， China） |
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Abstract The cold bending process of st52-3G iron-based sheet metal is a complicated deformation process， which depends heavily on pass design， and defects appear when the pass is slightly inappropriate. Finite element method was used to simulate the cold bending process of st52-3G iron-based sheet at different angles. The stress variation law and deformation distribution of metal in deformation zone were analyzed. Results show that in the direction of thickness， the inner metal of neutral layer is compressed， and the lateral metal is stretched， which is the source of non-uniform deformation of the longitudinal direction， and also the cause of the defective plate. When the bending angle is more than[25°]， non-uniform deformation begins to increase rapidly. The non-uniformity of deformation increases rapidly with the bending angle in 26-29[(°)]， but the defective plate does not appear. When thebending angle is [30°]， uneven deformation is extremely serious， and defective plate appears. The cold bending angle can be appropriately increased， but too large angle leads to flatness defect. The suitable angle for cold bending is 25-29[(°)].
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Received: 24 January 2018
Published: 24 December 2018
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2018, Vol. 28 
