Transactions of Materials and Heat Treatment

Title：Numerical simulation on high frequency rotary forging based on flexible feeding

Authors： Liu Zhiwei Hu Zhenwei Chen Xiangyang Hu Haixia

Unit： College of Mechanical Engineering Anhui University of Science & Technology

KeyWords： flexible feeding high frequency rotary forging counter flow elastic coefficient feeding force forming force

ClassificationCode：TG316

year,vol(issue):pagenumber：2022,47(12):1-6

Abstract：

In the process of high-frequency rotary forging, due to the continuous feeding of feeding mechanism, the bell mouth of forging die will block the feeding of workpiece when the forging die is closed, resulting in the phenomenon that the material flows against the feeding direction and the counter flow is greater than the forward flow, which makes the feeding force and forging force increase and leads to the reduction of forging die life and forming quality. Therefore, for the rotary forging process of sintered copper tube, a high-frequency rotary forging method based on the flexible feeding mode was proposed, and the influences of feeding method and elastic coefficient of flexible feeding on the rotary forging process were studied by the finite element method. The results show that the flexible feeding mode can not only solve the problems caused by the counter flow of materials, and improve the forming quality and forming efficiency of pipe fittings, but also reduce the feeding force and forming force, and improve the life of forging die. Thus, within a certain range, for the high-frequency rotary forging of flexible feeding, with the increasing of spring elastic coefficient, the longitudinal thickness distribution of pipe fittings does not change much, and the circumferential thickness distribution tends to be uniform.

Funds：

安徽省高校自然科学基金重点项目（KJ2019A0127）

刘志卫（1986-），男,博士,讲师 E-mail：lzwlws@163.com

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