Transactions of Materials and Heat Treatment

Title：Process of multi-directional extrusion and die forging for control arm of aluminum alloy

Authors： Ren Weiwei Xu Chunguo Chen Xianglong

Unit： Beijing Research Institute of Mechanical and Electrical Technology

KeyWords： branching control arm of aluminum alloy multi-directional extrusion die forging preformed blank FEM analysis

ClassificationCode：TG316

year,vol(issue):pagenumber：2018,43(8):110-116

Abstract：

The multi-directional extrusion process for preformed blank forging of complex branching control arms was proposed, and for typical complex control arms of aluminum alloy, the billet temperature, velocity and locus of material flow, and extrusion load in multi-directional extrusion process as well as the temperature distribution and material filling mold process in die forging process were researched by finite element analysis. The simulation results show that when the extrusion temperature of billet is 540 ℃ and the die is heated to 200 ℃, the temperatures of two branches are 520 ℃ after extrusion, the head temperature of branch is about 480 ℃ and the second-heat is not needed. However, the material deforms uniformly in die forging, the material filling mold effect is good with small flash. It shows that the preformed blank is well matched with the forging mold, and the simulation process is verified by a multi-directional hydraulic press. The results show that high quality pre-blank of control arm forging can be obtained by multi-directional extrusion process, and the above extrusion process is feasible.

Funds：

任伟伟(1983-)，男，博士研究生，工程师，E-mail：Renweiwei2009@126.com；通讯作者：徐春国(1970-)，男，博士，研究员，E-mail：13910082751@163.com

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