Transactions of Materials and Heat Treatment

Title：Application of cold upsetting extrusion forming technology in the manufacture of zinc paste type counterbalance

Authors： Zhang Yalong Xu Xincheng Zhu Jianjun

Unit： Shanghai University of Engineering Science

KeyWords： zinc counterbalance cold upsetting extrusion forming numerical simulation mould design

ClassificationCode：

year,vol(issue):pagenumber：2016,41(1):66-70

Abstract：

It was studied the feasibility of the cold upsetting extrusion forming in the manufacture of zinc paste type counterbalance, and the mould was designed according to the requirements of the part. The simulation of forming process by Deform-3D shows that the damage factor and elongation ratio are more remarkable on the flash edge, however, the quality of the part is good, and the peak of forming load is about 10% lower than that of theoretical calculation. The error of the parts produced according to the proposed process routes is within ±0.5 g in weight. Comparing with die casting products，the internal organization is denser with the hardness increased by one time, and the impact toughness increased by more than two times. Further, the mould life is more than 150000 pieces as five times as that of the mould casting, the material utilization increases by 20% or so. As a result, the molten zinc ingot process is avoided in the die casting process, and the energy consumption of products reduces significantly.

Funds：

上海市085内涵建设（nhjx-2015-02）

张亚龙（1988-），男，硕士，助理实验师

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