Transactions of Materials and Heat Treatment

Title：Study on deformation behavior of stainless steel tube during dieless forming process of bellows

Authors： Zhang Zicheng Zhang Haotian

Unit： Northeastern University

KeyWords： stainless steel bellows dieless forming local heating width of deformation zone

ClassificationCode：TH306

year,vol(issue):pagenumber：2021,46(4):185-190

Abstract：

The influence laws of dieless forming process parameters on the deformation behavior of metal tube and the dimensions of bellows were studied by means of experiment and finite element simulation. The SUS 304 stainless steel tube was used as blank and the bellows with good shape were obtained successfully by dieless forming process with different parameters. Firstly, the finite element model of dieless forming for metal bellows was established. The reliability of the model was verified by comparing the simulated and measured values of axial temperature distribution and profile dimensions of bellows. Secondly, the influence of different process parameters on the forming behavior of bellows was calculated by the model. The results show that in the forming process, the parameters such as velocity ratio at both ends and width of deformation zone have significant influence on peak height and spacing, wall thickness and deformation behavior of metal tube, and the metal bellows of desired shape can be controlled by adjusting the parameters reasonably.

Funds：

国家自然科学基金资助项目（51304046）

张自成（1981-），男，博士，副教授 E-mail：zhangzicheng@me.neu.edu.cn

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