Transactions of Materials and Heat Treatment

Title：Structure design improvement of hot forging die for automobile connecting rod

Authors： Liu Yahui Liu Shumei Yu Qiuhua

Unit： Shanghai University of Engineering Science

KeyWords： engine connecting rod hot forging die folding defects numerical simulation

ClassificationCode：TG312

year,vol(issue):pagenumber：2014,39(3):108-112

Abstract：

Finite element simulation was performed for hot forging process of automobile engine connecting rod based on Deform software to study the impact of forging die structure on the rod folding defects. Using original forging die for FE simulation, the results show that the center flash gutter depth of the original die and the center distance and rotation angle of two chambers are too big, which lead to severe folding defects at small end of connecting rod. By removing the center flash gutter and changing the center distance and rotation angle of die chambers, the structural design of connecting rod forging dies is improved. Using improved forging die for FE simulation, the results show that the folding defects of forging are reduced, the lateral flow of metal is more reasonable,and the load of pre-forging is significantly reduced. Forging rods without defects were also obtained in actual production.

Funds：

上海工程技术大学研究生科研创新资助项目(13KY0516)

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