Cu-Cr-Zr合金接触导线拉拔过程的有限元模拟及参数优化  

Finite Element Simulation and Parameters Optimization on Drawing Process of Cu-Cr-Zr Alloy Contact Wire

作　　者：马彪[1] 黄国杰[2] 李雷[1,2] 谢水生[2] 

机构地区：[1]河南理工大学材料科学与工程学院,河南焦作454000 [2]北京有色金属研究总院有色金属材料制备加工国家重点实验室,北京100088

出　　处：《稀有金属》2010年第S1期5-9,共5页Chinese Journal of Rare Metals

基　　金：国家自然科学基金资助项目(50704006);国家‘十一五’科技支撑计划资助(2007BAE23B04)资助

摘　　要：Cu-Cr-Zr合金具有优良的综合性能,Cu-Cr-Zr合金接触线强度高,需要多道次拉拔成形,为了制订合理的模具结构及拉拔工艺参数,采用有限元方法,对截面积为110 mm2的接触导线拉拔过程进行了数值模拟。研究了拉拔模模角、定径带长度等模具结构参数和拉拔速度、摩擦因子等拉拔工艺参数对接触线成形过程的影响,得到了优化的拉拔模结构参数和拉拔工艺参数,为实际生产提供了模具及工艺参数设计依据。对于本研究开发的Cu-Cr-Zr合金,其强度保持在σb>600 MPa的同时,导电率依然维持在80%IACS以上,适合于制做时速350 km.h-1以上的高速铁路接触导线。Cu-Cr-Zr alloy possesses superior comprehensive properties.For the Cu-Cr-Zr alloy developed by authors,its tensile strength σb>600 MPa,at the same time,its conductivity was still larger than 80%IACS.It was suitable for using as contact wire of the high speed railway when the speed was larger than 350 km · h-1.The strength of Cu-Cr-Zr alloy used for high speed railway was so high that its forming needed multi-pass drawing.In order to set rational mould construction and drawing technology parameters,the drawing process of contact wire with 110 mm2 sectional area was analyzed by finite element method.The influences of modular angle,calibrating strip,drawing speed and frictional factor on the drawing process were analyzed.The optimized drawing mould structure parameters and drawing technical parameters were obtained.It provided the references for the practical fabrication.

关 键 词：CU-CR-ZR合金 接触导线 拉拔 数值模拟 

分 类 号：TG359[金属学及工艺—金属压力加工]