Transactions of Materials and Heat Treatment

Title：Effects of die entry angles on copper bus bar continuous extrusion extending forming

Authors： CAO Xue LIU Yuan-wen PEI Jiu-yang

Unit： Dalian Jiaotong University

KeyWords： copper bus bar continuous extrusion entry angle of die extending forming numerical simulation

ClassificationCode：TG376

year,vol(issue):pagenumber：2013,38(5):91-96

Abstract：

Continuous extrusion extending deformation is an advanced forming process for manufacturing copper bus bar and the entry angle of die is the important factor that affects product forming. According to the characteristics of continuous extrusion deformation, the copper bus bar continuous extrusion deforming process by adopting the dies of different entry angles was simulated using rigid-plastic FEM based on Deform-3D, the temperature, strain-effective, stress-effective, load and velocity field were analyzed. Results show that in the extending forming stage, when the die entry angle is 15°, the stress-effective distribution is more uniform, the stress concentrating on the corner is small, the metal flow velocity mean-squared error at die working area is the minimum of 0.05, the torque of extrusion wheel and load of chamber are reasonable, which are in favor of extending forming. The simulation results were verified by experiment，which provides important theoretical foundation for the continuous extrusion die-design optimization.

Funds：

国家科技支撑计划资助项目（2011BAE23B01）

曹雪（1978-），女，硕士，助理工程师

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