理化检验-物理分册2026，Vol.62Issue(5)：56-60,5.DOI:10.11973/lhjy-wl260040
新安装余热锅炉过热器弯管腐蚀泄漏原因
Causes of corrosion leakage in the superheater elbow of a newly installed waste heat boiler
阮兴龙 1杨成明 2王彪 2焦少彬 1胡发科1
作者信息
- 1. 湖南省特种设备检验检测研究院,长沙 410100
- 2. 湖南省湘电锅炉压力容器检验中心有限公司,长沙 410100
- 折叠
摘要
Abstract
During the hydraulic test of a newly installed waste heat boiler,the superheater tube leaked repeatedly.The leakage causes of the elbow were analyzed by means of penetrant testing,chemical composition analysis,metallographic examination,mechanical property test,energy spectrum analysis and finite element simulation.The results show that the operating environment of the superheater tube had the conditions for alkali stress corrosion,and Na+was detected in the corrosion products.The main reason for the leakage of the superheater tube was the cracking of the material caused by alkali stress corrosion,which led to the leakage of the weld,elbow and other parts with large stress concentration.关键词
过热器/泄漏/碱应力腐蚀/余热锅炉/开裂Key words
superheater/leakage/alkaline stress corrosion/waste heat boiler/cracking分类
矿业与冶金引用本文复制引用
阮兴龙,杨成明,王彪,焦少彬,胡发科..新安装余热锅炉过热器弯管腐蚀泄漏原因[J].理化检验-物理分册,2026,62(5):56-60,5.
