| 摘要: |
| 本文采用有限元仿真计算与成形实验研究了TA34钛合金U型波纹管液压成形工艺，分析了成形过程中坯料长度、成形内压对波纹管母线弧长、壁厚、回弹的影响。研究结果表明，钛合金波纹管液压成形过程中，随坯料长度与成形内压的增加，母线弧长线性提高，波峰高度逐渐增加，波峰处壁厚下降，波纹管轴向回弹与径向回弹升高；随母线弧长的提高，成形件的轴向回弹与径向回弹线性升高；该工艺可将波纹管成形件的波高与波宽之差控制在5%以内，并通过对工艺参数的优化成功制备了U型TA34钛合金波纹管。 |
| 关键词: 波纹管 钛合金 液压成形 |
| 基金项目:国家自然科学基金资助项目（523***24） |
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| Study on Hydroforming of Titanium Alloy Bellows |
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Li Zhe1,2, Wang Kehuan1,2, Chen Wentao1,2, Liu Gang1,2
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1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001;2. National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001
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| Abstract: |
| In this paper, the hydroforming of U-shaped TA34 titanium alloy bellows was studied by finite element simulation and forming experiment. The influences of billet length and internal pressure on arc length, wall thickness and springback of bellows during the forming process were analyzed. The results showed that with the increase of billet length and internal pressure, the arc length increased linearly, the wall thickness of the forming part decreased, and the axial and circumferential springback of the forming part increased. With the increase of the arc length, the axial and circumferential springback of the formed parts increased linearly. The process could control the difference between the wave height and the wave width of the forming parts to less than 5%. The U-shaped TA34 titanium alloy bellows were successfully formed by using the optimized process parameters. |
| Key words: bellows titanium alloy hydroforming |
