| 汽车用烘烤硬化板 BH340 及深冲板 St 15 成形性能分析 |
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| 引用本文： | 佘彩凤,鄂大辛,林芳.汽车用烘烤硬化板 BH340 及深冲板 St 15 成形性能分析[J].精密成形工程,2013,5(3):6-9,18. |
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| 作者姓名： | 佘彩凤 鄂大辛 林芳 |
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| 作者单位： | 北京理工大学 材料学院, 北京 100081;北京理工大学 材料学院, 北京 100081;上海汽车集团股份有限公司 技术中心, 上海 201804 |
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| 基金项目： | 国家自然科学基金(51175044) |
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| 摘 要： | 进行了汽车用烘烤硬化钢板 BH340 及深冲钢板 St15 的力学性能、时效特性和烘烤硬化性能实验,并利用有限元方法模拟了 2 种钢板的成形极限和破裂点应变路径。 分析后指出, BH340 烘烤硬化效应较显著,时效效应不明显,对于汽车外覆盖件成形、涂漆烘烤工艺具有较好的适应性; St15 经形变强化后仍具有良好的塑性,适用于多道次成形工艺。 另外,2 种钢板均具有较为明显的面内异向性。
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| 关 键 词： | 汽车用板 烘烤硬化 成形极限 |
| 收稿时间： | 2013/3/20 0:00:00 |
| 修稿时间： | 4/1/2013 12:00:00 AM |
Analysis on Forming Properties of Bake-hardening Sheet Steel BH340 and Deep-drawing Sheet Steel St 15 for Automobile |
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| SHE Cai-feng,E Da-xin and LIN Fang.Analysis on Forming Properties of Bake-hardening Sheet Steel BH340 and Deep-drawing Sheet Steel St 15 for Automobile[J].Journal of Netshape Forming Engineering,2013,5(3):6-9,18. |
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| Authors: | SHE Cai-feng E Da-xin and LIN Fang |
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| Affiliation: | School of Materials and Science Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Materials and Science Engineering, Beijing Institute of Technology, Beijing 100081, China;SAIC Motor Technical Center, Shanghai 201804, China |
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| Abstract: | Experiments are carried out to research the mechanical properties, aging characteristics and bake hardenability of bakehardening steel sheet BH340 and deep-drawing steel sheet St15 for automobile, and the forming limit and strain path in the fracture position of both sheets are simulated by finite element method. It was revealed that a remarkable bake-hardenability and invisible aging effect can be expected for BTH340 steel sheet,which makes it adaptable for automobile panel forming and paint baking process; while a good plasticity can be expected for St15 steel sheet after work-hardening,which makes it appropriate for multi-step forming process.Besides, both steel sheets display obvious anisotropy in plane. |
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| Keywords: | automobile sheet steel bake hardening forming limit |
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