铜包钢接触线坯连续包覆工艺优化设计

采用刚-粘塑性有限元法,建立了铜包钢连续包覆的三维热力耦合有限元模型,对变形过程进行了数值模拟。通过模拟,分析了芯线位置、挤压轮转速、导向模与凹模间隙等工艺参数对连续包覆过程的温度场、金属流动情况、挤压轮扭矩等的影响规律,得到了合理的工艺参数和优化的模具结构。

The optimal design of continuous extrusion cladding forming process for copper clad steel contact wire blank

The 3-D coupled thermo-mechanical finite element model for Copper-Clad Steel on continuous extrusion cladding is established,the forming process is simulated by the rigid-viscoplastic finite element method.Effect on temperature,metal flow and extrusion wheel torque are analyzed at the different technology parameters such as core wire position,the extrusion wheel velocity,and the clearance between guiding die and cavity die.The proper technology parameters and optimal die structure are obtained.