Transactions of Materials and Heat Treatment

Title：Process scheme design on hot precision forging for a synchronizer ring

Authors： Liang Qiang

Unit： Chongqing Technology and Business University Chongqing Technology and Business University

KeyWords： synchronizer ring hot precision forging folding defect metal confluence numerical simulation

ClassificationCode：TG316

year,vol(issue):pagenumber：2019,44(1):17-21

Abstract：

The forming process schemes of two kinds of hot precision forging for synchronizer ring were proposed, and their forming processes were simulated by the finite element software Deform3D. Then, the metal flow and strain distribution laws of two process schemes were compared. The simulation results show that at the end of forming process for the first process scheme, the deformation at the joint between positioning key and side wall is severe, and the metal confluence in two directions results in folding defect. However, for the second scheme, the positioning key is filled by a radial and axial composite flow at the final stage, and the metal confluence in two directions does not exist at the joint between positioning key and side wall. Finally, no folding defect is generated. The process experiments show that the synchronizer ring has obvious folding defect at the joint between positioning key and side wall by the first process scheme, and the synchronizer ring is filled sufficiently without folding defect by the second process scheme. Furthermore, the simulation results are consistent with the experiment results, and the numerical simulation can provide guidance for the actual production.

Funds：

重庆市基础科学与前沿技术研究专项基金资助项目（cstc2017jcyjAX0175）；重庆工商大学高层次人才启动项目（1856002）；重庆工商大学校内科研项目（1752009）

梁强（1988-），男，博士，讲师，E-mail：woliangniliu@163.com

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