压力容器2018，Vol.35Issue(2)：66-73,8.DOI:10.3969/j.issn.1001-4837.2018.02.011
二氧化碳高压气瓶定期检验中水压试验泄漏失效分析
Leak Failure Analysis on CO2High Pressure Cylinder under Hydrostatic Test in Periodic Inspection
徐淑芳 1黄国根 2刘兆华 3尹谢平4
作者信息
- 1. 浙江格洛斯无缝钢管有限公司,浙江 绍兴 312367
- 2. 浙江省特种设备检验研究院 省重点实验室,浙江杭州 310020
- 3. 攀钢集团攀枝花钢铁研究院有限公司,四川攀枝花 617000
- 4. 浙江金盾压力容器有限公司,浙江绍兴 312367
- 折叠
摘要
Abstract
To research the reason of leak failure on CO2high pressure cylinders under hydrostatic test in periodic inspection,through the research and analysis on the chemical composition,mechanical property, macro and micro rupture,and metallurgical structure of leak cylinders,the results show:The corrosive pits were observed on inside surface of leak cylinder;a layer of corrosion matter which was grey-black was on the rupture surface of leak area;cracks initiated from the decarburized layer on inside surface and devel-oped outwards to the outer surface with root shape;the transcrystalline cracks produced from a easily cor-rosion strip-like microstructure on the inside surface had the SCC characteristic.The reason of leak failure was:The transaction of CO2and water formed the corrosive environment,the SCC produced from the strip-like microstructure on the inside surface under the action of the internal pressure,the leak failure occurred when the cracks developed outwards to outer surface and leaded to locally penetrated the wall thickness or wall thickness not bore the specified pressure.关键词
高压气瓶/泄漏/应力腐蚀开裂(SCC)/失效分析Key words
high pressure cylinder/leakage/stress corrosion cracking(SCC)/failure analysis分类
机械制造引用本文复制引用
徐淑芳,黄国根,刘兆华,尹谢平..二氧化碳高压气瓶定期检验中水压试验泄漏失效分析[J].压力容器,2018,35(2):66-73,8.
