东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2004, Vol. 25 ›› Issue (9): 844-847.DOI: -

• 论著 • 上一篇    下一篇

用上引连铸法生产铜银合金接触线的实验研究

刘强;崔建忠;许光明;刘晓涛   

  1. 东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室;东北大学材料电磁过程研究教育部重点实验室 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2004-09-15 发布日期:2013-06-25
  • 通讯作者: Liu, Q.
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展规划项目(G1999064905)

Experimental study of Cu-Ag alloy contact wire manufactured through upward-casting process

Liu, Qiang (1); Cui, Jian-Zhong (1); Xu, Guang-Ming (1); Liu, Xiao-Tao (1)   

  1. (1) Lab. of Mat. Electromagnetic Proc., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2004-09-15 Published:2013-06-25
  • Contact: Liu, Q.
  • About author:-
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摘要： 研究了用上引连铸法生产铜银合金接触线的生产工艺及产品性能·结果表明,上引连铸法的电磁搅拌作用可显著提高合金成分的均匀性,Ag的质量分数偏差不超过±0 01%,比用其他方法生产的均匀性提高1倍·铜银合金接触线试样的性能实验表明,铜银合金接触线的主要性能指标优于纯铜接触线·随Ag含量的增加,接触线的拉断力提高,延长率下降,导电率略有下降;当Ag质量分数超过0 12%时,接触线的塑性明显下降·铜银合金接触线较纯铜接触线软化温度提高近100℃,这对于提高电气化铁路的运行安全和提高接触线的使用寿命有着极其重要的意义·综合分析铜银合金接触线的强度与塑性可知,Ag质量分数在0 1%～0 12%为宜·

关键词: 上引连铸法, 接触线, 电磁搅拌, 拉断力, 热稳定性, 导电率

Abstract: The upward-casting process, to manufacture Cu-Ag alloy contact wire, and its product properties were investigated experimentally. The results showed that the electromagnetic stirring effect in the upward-casting process can improve the homogeneity of alloy composition prominently, by which the deviation of Ag mass fraction can be reduced down to 0.01% or only half by other methods. Tests with the samples of Cu-Ag alloy contact wire showed that the main properties of Cu-Ag alloy contact wire are better than those of the pure copper one, i.e., higher breaking load, lower elongation and slightly lower conductivity with the increasing Ag content. Its plasticity decreased notably when Ag mass fraction exceeds 0.12%. As to the softening temperature, the alloy wire is about 100°C higher than that of the pure copper one - it is of far-reaching importance to safe railway running and wire's service life. In view of the wholeness of properties, the Ag mass fraction of Cu-Ag alloy contact wire should be kept from 0.1% to 0.12%.

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