Transactions of Materials and Heat Treatment

Title：Optimization of multi-directional precision forging for aluminum alloy casing

Authors： LI Qing-jie XIA Ju-chen DENG Lei CHEN Xue-zhu HU Zhi FAN Qing-song

Unit： Huazhong University of Science &Technology Jianshe Industry (Group) Corporation Limited

KeyWords： casing multi-directional precision forging optimization finite element simulation

ClassificationCode：TG319

year,vol(issue):pagenumber：2010,35(5):24-28

Abstract：

The material utilization ratio and production efficiency were improved by using multi\|directional precision forging method in casing production. However, for the complex shape of casing and characteristics of 7A04 aluminum alloy which has a bad plastic workability and strain rate sensitivity, some defects would be produced during the forming process, such as underfilling and fold. Theoretical analysis of plastic forming, thermal\|mechanical finite element numerical simulation and experimental study were carried out. The rule of deformation behavior and material flow were summarized. The optimization of billet shape and preforging process were proposed to solve the problems appeared in production. Qualified forging parts were obtained and industrial production was achieved.

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