Transactions of Materials and Heat Treatment

Title：Process optimization on hot forging for spline shaft fork based on Deform-3D

Authors： Zhang Xueqi Dong Wanpeng Su Yu Sun Libin Fan Yue Zhang Liyan

Unit： Shanghai University of Engineering Science Shanghai JD Chukyo Forging & Stamping Co. Ltd.

KeyWords： spline shaft fork hot forging filling insufficient die wear flash Deform-3D

ClassificationCode：TG315.2

year,vol(issue):pagenumber：2017,42(1):5-9

Abstract：

For the problem of excessive material consumption in the traditional forging process for spline shaft fork, the vertical pre-forging and stem hot extrusion were put forward, and the die structure design in the vertical pre-forging was given. Then, the hot extrusion mold parameters were optimized to solve the insufficient filling problem. Finally, the qualified forging workpieces were produced with less energy consumption, less material consumption and higher productivity. Furthermore, the forging process of spline shaft fork was observed by the finite element analysis software Deform-3D, and the causes of defect and the forming effects after parameter optimization were accurately analyzed. It is proved that the simulation results are reliable through actual production. Actual production shows that the productivity is increased by 20% at least, the material consumption is saved about 15%, the final forging die wear is decreased by about 25%, and the die life is increased obviously by the optimum parameters of pre-forging ejection gradient and final forging die bridge.

Funds：

国家自然科学基金资助项目（51301105）；上海工程技术大学研究生科研创新资助项目（15KY0508）

张学奇（1990-），男，硕士研究生 E-mail：296129023@qq.com 通讯作者：董万鹏（1976-），男，博士，副教授 E-mail：dong@sues.edu.cn

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