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| 大直径薄壁铝合金封头剪切旋压成形缺陷分析 |
| Defect Analysis of Shear Spinning of Aluminum Alloy Thin-walled Head with Large Diameter |
| Received:November 24, 2015 Revised:March 10, 2016 |
| DOI：10.3969/j.issn.1674-6457.2016.02.014 |
| 中文关键词: 大直径 薄壁 铝合金封头 剪切旋压 缺陷分析 |
| 英文关键词: large diameter thin-walled aluminum alloy head shear spinning defect analysis |
| 基金项目: |
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| 中文摘要: |
| 目的 掌握大直径薄壁铝合金封头剪切旋压成形过程中不贴模、 局部隆起、 局部减薄等缺陷的形成机理。方法 基于ABAQUS/Explicit软件平台， 建立了大直径薄壁铝合金封头剪切旋压成形有限元数值模型， 采用该模型研究了该成形过程中缺陷的成形机理。结果 发现局部卸载回弹是导致旋压不贴模的主要原因， 且回弹越大， 局部减薄越严重。结论 通过工艺参数的合理取值， 可有效抑制缺陷的产生， 在试验中获得合格的工艺样件。 |
| 英文摘要: |
| The aim of this study was to master the formation mechanism of defects such as non-stickness on the die，local bulge and local thinning in shear spinning of aluminum alloy thin-walled head with large diameter. A finite element model for shear spinning of aluminum alloy thin-walled head with large diameter was established based on ABAQUS/Explicit， and the formation mechanism of defects in shear spinning was analyzed using the model. The local discharge springback was the main cause for non-stickness on the die， and the defect of local thinning was more serious with greater springback. Through selection of the reasonable technological parameters， the defects were suppressed effectively and the qualified part was obtained in the spinning experiment. |
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