银铜合金接触线新工艺的研究  

New Technology for Producing Ag-Cu Trolley Wire

作　　者：牛玉英[1] 宋宝韫[1] 刘元文[1] 

机构地区：[1]大连铁道学院材料科学与工程系,辽宁大连116028

出　　处：《中国铁道科学》2005年第3期99-103,共5页China Railway Science

基　　金：国家自然科学基金项目(50175012)

摘　　要：根据连续挤压工艺原理,提出"上引连铸—连续挤压—(轧制)—拉拔"银铜合金接触线制造新工艺。用扫描电子显微镜对新工艺生产的接触线进行显微组织观察分析,得出其横断面的平均晶粒度为8 62μm,在室温下的导电率为102 2%IACS、延伸率为7 78%、拉断力为47 42kN。用新工艺生产的接触线晶粒细小、均匀,其导电率、延伸率、拉断力等性能都明显提高。This paper introduces the continuous extrusion principle of Ag-Cu alloy trolley wire, brings forward the new manufacturing technology for producing Ag-Cu contact wire, that is continuous casting-continuous extrusion-(rolling)-drawing technology. The micro tissue of Ag-Cu trolley wire produced by new technology is studied through electronic microscope. The following results are obtained: the average crystal size of Ag-Cu trolley wire produced by new technology on section is 8.62 μm, the electric conductivity at room temperature is 102.2%IACS, extension rate is 7.78%, broken strength is 47.42 kN. It showed that the crystal size of the contact wire produced by new technology is small and uniformity. Its electric conductivity, extension and broken strength are apparently improved.

关 键 词：接触导线 合金导线 上引连铸 连续挤压 制造工艺 

分 类 号：U225.41[交通运输工程—道路与铁道工程]