Transactions of Materials and Heat Treatment

Title：Analysis on upsetting extrusion process for blind hole shaft parts with flange

Authors： Huo Wenjun Liu Shumei Zhao Yi

Unit： Shanghai University of Engineering Science

KeyWords： blind hole shaft with flange upsetting extrusion orthogonal experiment crack folding

ClassificationCode：TG316

year,vol(issue):pagenumber：2017,42(1):165-168

Abstract：

For the difficulty of one upsetting extrusion for blind hole shaft parts with flange,the upsetting extrusion process was improved many times by combining with the numerical simulation analysis, and two times upsetting extrusion process was confirmed. Then, the improved forming process of part was optimized by the orthogonal experiment, and the optimal process scheme was determined by considering folding angle, die load and stress distribution and other factors. The results show that the folding angle at the corner of flange can be reduced effectively by the forming process of extrusion hole-one times upsetting of flange-two times upsetting of flange, and the risk of cracking can also be decreased. Therefore, the workpiece quality is excellent with the press working speed of 2 mm·s-1, die fillet R1=5 mm, die fillet R2=2.5 mm and friction coefficient of 0.05. Finally, the parts of blind hole shaft with flange are obtained with the good surface quality in the actual production.

Funds：

上海工程技术大学大学生创新训练项目（cs1605006）；上海工程技术大学研究生科研创新资助项目（16KY0514）

霍文军（1992-），女，硕士研究生 E-mail：hwj1974789683@163.com 通讯作者：刘淑梅(1968-),女,硕士,副教授 E-mail：sgwy9999@163.com

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