| 引用本文: | 韩聪,张伟玮,苑世剑,赵福全,丁勇,曹伟.预制坯形状对扭力梁内高压成形的影响分析[J].材料科学与工艺,2011,19(4):1-5.DOI:10.11951/j.issn.1005-0299.20110401. |
| HAN Cong,ZHANG Wei-wei,YUAN Shi-jian,ZHAO Fu-quan,DING Yong,CAO Wei.The effect of preform shape on hydroforming of a torsion beam[J].Materials Science and Technology,2011,19(4):1-5.DOI:10.11951/j.issn.1005-0299.20110401. |
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| 摘要: |
| 针对复杂截面扭力梁内高压成形容易出现咬边和开裂的问题,以轿车V型扭力梁为例,采用数值模拟和试验方法,分析了预制坯形状对扭力梁内高压成形的影响,重点研究了压下量(Y)和侧向宽度(B)对预制坯形状和内高压成形的影响.结果表明,当Y、B分别为0.83D(D为管材直径)、0.73D和0.78D、0.78D时,得到的预制坯形状在合模时出现咬边缺陷;当Y、B分别为0.73D、0.73D和0.78D、0.68D时,得到的预制坯形状能够顺利完成合模过程,但在内高压成形时出现了开裂缺陷;当Y、B为0.78D、0.73D时,得到的预制坯能顺利成形出合格的内高压成形零件.由此可知,预制坯形状是决定复杂截面扭力梁内高压能否顺利成形的重要因素,通过控制截面的高宽尺寸和形状,可以得到合理的预制坯形状,避免内高压成形过程中缺陷的产生. |
| 关键词: 内高压成形 液压成形 扭力梁 预成形 |
| DOI：10.11951/j.issn.1005-0299.20110401 |
| 分类号:TG394 |
| 基金项目:国家自然科学基金资助项目(51075097) |
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| The effect of preform shape on hydroforming of a torsion beam |
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HAN Cong1, ZHANG Wei-wei1, YUAN Shi-jian1, ZHAO Fu-quan2, DING Yong2, CAO Wei2
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1.State Key Laboratory of Advanced welding and Joining,Harbin Institute of Technology,Harbin 150001,China;2.Zhejiang Geely Automobile Research Institute Co.Ltd.,Linhai 317000,China
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| Abstract: |
| To solve the problem of wrinkling and bursting during hydroforming of a torsion beam with complicated sections,numerical simulations and experimental researches were conducted,and the effect of different combinations of pressing distance Y and lateral width B of preform shapes was studied.The results showed that the flanges occurred during dies closing when Y is 0.83 D and B is 0.73 D(D is the outer diameter of the tube)or Y is 0.78 D and B is 0.78 D,respectively.However,the bursting occurred during hydroforming when Y is 0.73 D and B is 0.73 D or Y is 0.78 D and B is 0.68 D,respectively.The hydroforming process can be successfully conducted and qualified parts can be obtained with the preform shape when Y is 0.78 D and B is 0.73D.The preform shape is the most important factor on hydroforming of a torsion beam with complicated sections,and the defects can be avoided by changing the dimensions and shapes of the preform. |
| Key words: internal high pressure forming hydroforming torsion beam preform |
