Transactions of Materials and Heat Treatment

Title：Study on isothermal precision forming process of aluminium alloy rotating disk

Authors： Wu Jichao Zhang Yanqiu Zhao Yanan Jiang Shuyong Shan Debin

Unit： Harbin Aircraft Industry Group Co. Ltd. Harbin Engineering University Harbin Institute of Technology

KeyWords： aluminum alloy rotating disk isothermal precision forming finite element method

ClassificationCode：

year,vol(issue):pagenumber：2014,39(1):14-20

Abstract：

In order to choose an appropriate isothermal precision forming process and obtain the aluminium alloy rotating disk forging with excellent combination properties, the finite element method (FEM) was adopted to analyze metal flow laws of isothermal precision forming of rotating disk based on two different billets. The aluminium alloy forging of rotating disk with perfect shape and excellent combination properties was obtained by the process of upsetting, preforging and finish forging. The results show that the metal flows mainly along the radial direction in the process of forging when the ring billet is adopted, and underfilling defect occurs very easily. However, the pentagon billet can prevent this kind of defect because it can make the metal fill the impression along axial direction. The load in forging the rotating disk with ring billet is much larger than that with pentagon billet even though the projected area of ring billet is smaller than that of pentagon billet. Therefore, the pentagon billet is the optimum billet project for isothermal precision forming of rotating disk.

Funds：

国家自然科学基金资助项目(50775051)

吴继超（1973-），男，硕士，高级工程师

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