理化检验-物理分册2024，Vol.60Issue(4)：37-41,45,6.DOI:10.11973/lhjy-wl202404009
某油冷却器换热管泄漏原因
Leakage reason of heat exchange tube of oil cooler
许恒庭 1武英英 1姚文德 1刘维丽 1陈莉1
作者信息
- 1. 上海航天精密机械研究所,上海 201600
- 折叠
摘要
Abstract
Corrosion leakage occurred in the heat exchange tube of oil cooler produced by a company after it was put into use for 9-12 months.The causes of pipeline corrosion and leakage were analyzed by means of macroscopic observation,chemical composition analysis,metallographic examination,scanning electron microscopy and energy spectrum analysis,and atomic absorption spectrometry.The results show that the chloride ions and sulfur ions in the heat exchange tube medium of the oil cooler were deposited in the fouling of the inner wall of the tube and enriched in the front of the tube wall matrix,resulting in a large number of pitting corrosion on the inner wall.The pitting corrosion position and the uncorroded position formed a large cathode and small anode corrosion cell,which accelerated the corrosion rate,and the pitting corrosion pit was further expanded under the erosion of the medium in the tube,which eventually led to the leakage of the pipeline.关键词
镍白铜/油冷却器换热管/点腐蚀/氯离子和硫离子/腐蚀电池Key words
nickel white copper/oil cooler heat exchange tube/pitting corrosion/chloride ion and sulfur ion/corrosion battery分类
机械制造引用本文复制引用
许恒庭,武英英,姚文德,刘维丽,陈莉..某油冷却器换热管泄漏原因[J].理化检验-物理分册,2024,60(4):37-41,45,6.
