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针对微小铝合金波纹管提出了一种单线圈-双电源吸引式电磁成形波纹管的方法。以单波波纹管为例，揭示了波纹管吸引式电磁成形过程的成形机制，验证了吸引式电磁成形波纹管的可行性。成形过程中径向电磁力发挥主导作用，轴向电磁力促进了材料的流动，应力集中在波峰和圆角区域，壁厚呈现从波谷到波峰线性变薄的趋势。进一步地，以三波波纹管为例研究了多波波纹管成形，揭示了影响波纹管吸引式电磁成形工艺成形高度及壁厚变薄的关键因素。最佳成形条件下，三波波纹管的最大减薄率为10.1%,与模具最大间隙仅为0.04 mm,贴模效果优异，证明了吸引式电磁成形可以高效地成形金属波纹管。
Abstract：A single coil-dual power supply attractive electromagnetic forming method was proposed for tiny aluminum alloy bellows. A single-wave bellow was used as an example to reveal the forming mechanism of the attractive electromagnetic forming process of bellows, and the feasibility of forming bellows by attractive electromagnetic forming was verified. During the forming process, the radial electromagnetic force plays a dominant role, while the axial electromagnetic force promotes material flow. Stress concentration occurs in the crest and fillet regions, and the wall thickness shows a linear thinning trend from the trough to the crest. Furthermore, the forming of multi-wave bellows was studied using a three-wave bellow as an example, and the key factors affecting the forming height and wall thickness thinning of the attractive electromagnetic forming process for bellows were revealed. Under the optimal forming conditions, the maximum thinning rate of the three-wave bellow is 10.1%, the maximum gap with the mold is only 0.04 mm, and mold-fitting effect is excellent, demonstrating that attractive electromagnetic forming can efficiently form metal bellows.
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基本信息:
DOI：
中图分类号:TG391
引用信息:
[1]熊奇,王毅哲,邱爽,等.金属波纹管吸引式电磁成形数值研究[J].塑性工程学报,2025,32(11):1-13.
基金信息:
武汉强磁场学科交叉基金资助项目(WHMFC202121)