Transactions of Materials and Heat Treatment

Title：Optimization on holeflanging process for storage tank melon flap based on finite element analysis

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ClassificationCode：TG386.49

year,vol(issue):pagenumber：2019,44(8):49-54

Abstract：

The holeflanging process of 2219 aluminum alloy storage tank melon flap was simulated by finite element analysis software ABAQUS, and the stress under different holeflanging process parameters (prepunching hole diameter, process round corner and wall thickness of sheet material) and the final forming quality of holeflanging were simulated analyzed. The analysis results show that the reasonable setting with the prepunching hole diameter d=Φ 60 mm, the process round corner R=2 mm and the wall thickness of sheet material δ=6 mm around the holeflanging area improves the holeflanging forming quality. At the same time, it can also help to reduce the maximum residual stress of material. Finally, the holeflanging experiments for storage tank melon flap with the base material of 2219 aluminium alloy were conducted based on various holeflanging process parameters in the simulation process, and the influences of process parameters on the final forming quality of holeflanging were analyzed by the adjustment of prepunching hole diameter and process round corner. Furthermore, the experimental results are consistent with the results of finite element analysis, and the reasonable prepunching hole diameter for making Φ75 mm holeflanging with 8 mm thickness of storage tank melon flap is Φ62 mm, and the edges are smooth sufficiently.

Funds：

航天一院工艺改进项目（Y4170153C）

作者简介：韩磊（1987-），男，硕士，工程师 E-mail：hanltop@126.com

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