Transactions of Materials and Heat Treatment

Title：Numerical simulation and experimental study on extrusion forming process of 45° lateral tee based on AFDEX

Authors： Zhao Hengliang1 Zhong Zhiping1 Zhai Yuewen1 Ma Xiaohui1 Liu Weifang1 Shi Bo2 Wang Wei3

Unit： 1. China Academy of Machinery Science and Technology 2. Hebei Hongrun Heavy Industry Co. Ltd. . Beijing Research Institute of Mechanical and Electrical Technology

KeyWords： 45° lateral tee upsetting backward extrusion piercing numerical simulation

ClassificationCode：

year,vol(issue):pagenumber：2016,41(4):60-64

Abstract：

Based on software AFDEX, a thermal-mechanical plasticity FEM model for extrusion process of 45° lateral tee was established. The effective strain, load-time curves and the distribution of mold stress in the extrusion process were revealed, and the extrusion press tonnage for extruding the specified 45° lateral tee was obtained. The research results show that the high strain values mainly focus on the area where the blank flows through vertical punch. The load-time curves show that during upsetting process，the load of upsetting rod first increases slowly，then increases rapidly till the end of upsetting，and the forming load is up to 42410 kN；during backward extrusion process，the load of backward extrusion rod increases rapidly to 23000 kN，and then tends to stable in a period of time，finally the forming load rises to 34920 kN. Combining with the experiment, the loads in upsetting process and piercing process are 41520 and 34500 kN respectively, and are close to the simulation results，which shows that the above process is rational and the mold structure can satisfy the requirement.

Funds：

国家科技重大专项（2014ZX04014-051）；国际科技合作与交流专项（2015DFA51740）

赵恒良（1987－），男，硕士研究生

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