| 引用本文: | 陈保国,徐永超.预胀对筒形件充液拉深变形和硬化的影响[J].材料科学与工艺,2011,19(1):17-20.DOI:10.11951/j.issn.1005-0299.20110104. |
| CHEN Bao-guo,XU Yong-chao.Influence of pre-bulging on deformation and hardness of dual-phase steel cylindrical cup by hydrodynamic deep drawing process[J].Materials Science and Technology,2011,19(1):17-20.DOI:10.11951/j.issn.1005-0299.20110104. |
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| 摘要: |
| 为定量分析预胀对塑性成形的影响,以变形量差异较大的平底筒形件为研究对象,采用实验和数值模拟方法研究了预胀高度对双相钢DP340/590板材充液拉深的影响,分析了预胀对试件等效应变、壁厚减薄率和硬度分布的影响.研究表明,预胀显著增加平底筒形件底部的变形,即试件底部壁厚减薄率增加、硬度升高、等效应变增大.与普通充液拉深相比,相对预胀高度为20%时,试件等效应变差减小16.7%,底部维氏硬度值提高23.8%. |
| 关键词: 充液拉深 预胀 双相钢 筒形件 硬化 |
| DOI：10.11951/j.issn.1005-0299.20110104 |
| 分类号:TG386 |
| 基金项目:国家自然科学基金资助项目(50875062) |
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| Influence of pre-bulging on deformation and hardness of dual-phase steel cylindrical cup by hydrodynamic deep drawing process |
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CHEN Bao-guo, XU Yong-chao
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School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China
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| Abstract: |
| To quantitatively analyze the influence of pre-bulging on deformation,taking the dual-phase steel cylindrical cup with flat bottom as example,the experiments and simulation of the hydrodynamic deep drawing process with and without pre-bulging were carried out,and the equivalent effective strain distributions,wall thickness distributions and hardness distribution were discussed in details.The results indicate that the pre-bulging increases the thickness thinning,hardness and equivalent effective strain of the bottom.Compared with hydrodynamic deep drawing,when the relative pre-bulging height is 20%,the difference of equivalent strain decreases 16.7%,and the hardness of the bottom increases 23.8%. |
| Key words: hydrodynamic deep drawing pre-bulging relative pre-bulging height |
