Transactions of Materials and Heat Treatment

Title：Spinning compound forming process for pear-shaped six-way part

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ClassificationCode：V462

year,vol(issue):pagenumber：2020,45(11):94-100

Abstract：

For the structure characteristic of pear-shaped six-way part for 5A06 aluminum alloy, a test plan for multi-pass spinning compound forming was proposed, and the spinning and hole flanging tools were designed. Then, the process of ‘spinning of cylindrical part + progressive spinning of reverse cone + closing spinning + hole flanging’ was adopted to realize the integral forming of part. In order to meet the minimum wall thickness requirement of part, the combination of conventional and power spinning was adopted in the spinning of cylindrical part, the back and forth alternate spinning was adopted in closing, and the influences of heat treatment and spinning temperature on the forming were studied and analyzed. In addition, in the spinning process, the parts were prone to longitudinal and transverse cracks and edge wrinkle, which were closely related to the spinning temperature and times of annealing. The results show that when the spinning temperature reaches 300-320 ℃, after two times of stress relief annealing, the maximum thinning of part after hole flanging reaches the lowest which is 48.3%, and the whole forming effect is good without wrinkle, crack and other defects.

Funds：

中国航天科技集团有限公司第八研究院工艺技术研究项目（718-MY-01）

冯苏乐（1987-），男，硕士，高级工程师 E-mail：fengsuleshikeke@sina.com

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