Transactions of Materials and Heat Treatment

Title：Numerical simulation of influence of billet shape on the forming of

Authors： Cheng Wangjun Chi Chengzhong Wang Yongzhen Lin Peng Zhao Rihong Liang Wei

Unit： Taiyuan University of Technology

KeyWords： multi-row sprocket semi-precision forging die design billet shape numerical simulation

ClassificationCode：

year,vol(issue):pagenumber：2015,40(1):130-136

Abstract：

A new deformation process of semi-precision forging for multi-row sprocket was put forward and the die structures for the solid and the hollow billets of semi-precision forging were designed accordingly. The semi-precision forging process was simulated by three-dimensional finite element technology. The damage fields and the equivalent stress fields of die cavity filled with the solid and the hollow billets were obtained respectively and finally the basic characteristics of deformation processes for two billets were analyzed. The results show that under the same simulative conditions, the maximum damage extent is on the teeth top of the hollow billets and the mandrel hole of the solid billet, their maximum damage factors are 1.52 and 0.98 respectively. The maximum stress concentration is on the teeth top of the hollow billets, and the mandrel hole and the teeth top of the solid billet, their maximum equivalent stresses are 167 and 110 MPa respectively. Therefore, forming multi-row sprocket with solid billet has more advantages than that of the hollow billet.

Funds：

国家自然科学基金资助项目 (51175363; 51274149)

程旺军 (1987-), 男，硕士研究生

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