Transactions of Materials and Heat Treatment

Title：Optimization on piercing process of warm forging gear parts based on orthogonal experiment

Authors： Zhou Xuan Wu Xianyang Zhang Haiying Feng Yang Liu Chang Chen Haitao Zhang Hengchao

Unit： Shanghai Automobile Gear Works

KeyWords： warm forging gear parts piercing punch wear orthogonal experiment finite element simulation

ClassificationCode：TG315.2

year,vol(issue):pagenumber：2017,42(10):19-25

Abstract：

Piercing is an essential process during the forming of warm forging gear parts. However, the wear of punch is the main factor influencing on the lifetime of punch. Then, for the piercing process of the warm forging of a second driven gear in dual clutch automatic transmission, the main factors influencing the die lifetime of punch in the piercing process of warm forging gear parts were analyzed, and the maximum wear amount of punch was regarded as a parameter to characterize the service life of punch. Furthermore, combining the orthogonal experimental design with finite element method, the influences of piercing process parameters on the wear of punch were analyzed qualitatively, and an optimized piercing process of warm forging gear parts was determined. The results verified by actual production show that the die lifetime of punch is increased from 4000 parts to 9000 parts, so the lifetime of punch is improved effectively.

Funds：

作者简介：周煊（1975-），男，学士，高级工程师,E-mail：xuanz@sagw.com;通讯作者：吴先洋（1990-），男，硕士，助理工程师,E-mail：xianyangw@sagw.com

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