电气化接触网零部件在典型环境的腐蚀研究

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摘要研究目的：铁道运输在我国经济发展过程中起着十分重要的作用。电气化接触网是沿铁路线架设的特殊电力线路，其金属零部件不可避免地要受到不同大气环境的腐蚀。这样，不但缩短了接触网金属件的使用寿命、增加了维护成本，而且对电气化铁道的安全运行也构成了威胁。因此，有必要系统地研究典型环境对铁路接触网金属构件的腐蚀影响，开发、构建新型涂层防护体系技术，以保障电气化铁路的安全运行，降低电气化铁路接触网维护成本。研究结论：（1）海洋大气环境的特点是空气湿度大，含盐分多，在受到酸性气体污染的海洋大气环境中金属结构腐蚀严重；（2）接触网金属零部件材料具有多样性，但目前仅对Q235材料加工的零部件采用了不同等级的热镀锌防腐处理，基于热镀锌涂层在不同腐蚀环境介质中的耐腐性不同，所以接触网金属零部件采取单一的热镀锌防腐措施很难满足当今电气化铁路的发展要求；（3）采用有机涂层对现役的接触网构件进行防护处理，可以大幅提高接触网构件在典型大气环境中的防腐能力，延长使用寿命，从而节约维护成本，提高接触网零件可靠性；(4)该研究成果可应用于电气化铁路接触网的设计与使用方面。

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关键词 ：高速铁路, 接触网, 环境腐蚀

Abstract：Abstract：Research purposes： The railway transport plays a very important role in the development of our domestic economy. The electrified overhead contact system is a special power line erected along the railway. The metallic components of overhead contact system are inevitably corroded in different atmospheric environment, which will not only reduce lifetime of the metallic components and increase their maintenance cost, but also is a threat to safe operation of electrified railway. Therefore, it is necessary to study the corrosion influence of typical atmospheric environment on metallic components. Some new coating protection technologies should be developed to ensure the safe operation of electrified railway and reduce the maintenance cost of overhead contact system for electrified railway.

Research conclusions：(1) The marine atmospheric environment is characterized by high air humidity and salt content. The metallic components are corroded seriously in the marine atmospheric environment polluted by acid gas. (2) The materials for catenary metallic components are diverse, but at present, only metallic component with Q235 material has been protected by the different levels of hot-dip galvanized anti-corrosion treatment. As the hot dip galvanized coating in the different corrosion environment medium is different in corrosion resistance, it is difficult that single hot dip galvanized anti-corrosion measure is used for the catenary metallic components to meet the development requirements of today's electrified railway. (3) To use organic coating for protection of existing catenary component can greatly improve the anticorrosion ability of catenary components in the typical atmospheric environment, increase the service life, save the maintenance cost and improve the reliability of catenary components. (4) The research achievement can be applied in the design and use of overhead contact system of electrified railway.

Key words： Key words: electrified railway overhead contact system atmospheric corrosion

作者简介: 刘莉蓉，1962年出生，女，教授级高级工程师

引用本文:

刘莉蓉1 雍兴跃2 郭奉迎1. 电气化接触网零部件在典型环境的腐蚀研究[J]. 铁道工程学报, 2015, 32(3): 81-.
LIU Li-rong1, YONG Xing-yue2, GUO Feng-ying1. Research on the Corrosion of Metallic Components of Overhead Contact System in Typical Atmospheric Environment. 铁道工程学报, 2015, 32(3): 81-.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2015/V32/I3/81

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