科技创新与应用2024，Vol.14Issue(25)：84-87,92,5.DOI:10.19981/j.CN23-1581/G3.2024.25.021
换热器用无缝钛管失效分析
吕高鹏 1张凯 1杨波 1周川 1权亚平1
作者信息
- 1. 宝鸡钛业股份有限公司,陕西 宝鸡 721000
- 折叠
摘要
Abstract
In this paper,through the use of macro detection,microstructure analysis,scanning electron microscope analysis,energy spectrum analysis and other methods to the flow medium for chloride solution of the heat exchanger seamless titanium tube failure analysis,found that the flow medium for chloride solution in the heat exchanger seamless titanium tube corrosion failure mainly through the following two ways:one is Fe+ions on the surface of titanium pipe will occur Titanium pipe surface form point corrosion,through the point corrosion of titanium tube corrosion failure;The other is that when the tube plate of the heat exchanger and the pipe form a certain gap,the gap corrosion will occur.When the gap corrosion occurs,the titanium pipe will be accompanied by hydrogen absorption reaction and self-catalysis,and eventually lead to corrosion holes and failure of the pipe.At the same time,we suggest that it is not easy to use stainless steel tube plate and titanium tube in combination when making heat exchangers with internal flow chloride solution,and the gap between the tube plate and the pipe is greater than 0.5mm to avoid point corrosion and gap corrosion resulting in heat exchanger leakage during use.关键词
换热器/无缝钛管/失效分析/腐蚀/宏观检测Key words
heat exchanger/seamless titanium tube/failure analysis/corrosion/macroscopic detection分类
医药卫生引用本文复制引用
吕高鹏,张凯,杨波,周川,权亚平..换热器用无缝钛管失效分析[J].科技创新与应用,2024,14(25):84-87,92,5.
