Transactions of Materials and Heat Treatment

Title：Forging process optimization on QFR-2 type of yokes

Authors： Wang Kai He Xiaomao Jiang Peng Zhu Yan Tang Zhenying

Unit： Qiqihar Vehicle Co. Ltd. CRRC Beijing Research Institute of Mechanical and Electrical Technology

KeyWords： forging yoke Deform-3D numerical simulation die forging flow stress curves room temperature tensile hot compression

ClassificationCode：TG386

year,vol(issue):pagenumber：2017,42(5):8-13

Abstract：

The QFR-2 type of yoke is a key component for export railway vehicles. Therefore, according to the production experience of 8000 t friction press, the process of QFR-2 type of yokes produced by 500 kJ impact hammer was re-analyzed, and the optimized process of raising the die face of tail part and forging lugs integrally was proposed. Then, the material parameters and the flow stress curves were obtained by room temperature tensile and hot compression experiments respectively. Furthermore, the Deform-3D software was input, and the proposed process was analyzed by the finite element. The results show that the optimized process is more conducive to metal deformation. It can reduce the number of blows and seven processing steps so as to decrease the scrap rate from 12% to 3%. Thus, the equipment life can be improved and the cost on production is reduced.

Funds：

王凯（1973-），男，学士，高级工程师

Reference：

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