密封圈腐蚀开裂失效原因分析及预防
Analysis and Prevention of Corrosion and Cracking Failure of Sealing Rings
王丽娟 1张伟 1曾志卫1
作者信息
- 1. 深圳市美信检测技术有限公司,广东 深圳 518108
- 折叠
摘要
失效样品为氟橡胶密封圈,在使用过程中出现漏油,密封圈被腐蚀,为了查找密封圈腐蚀的原因,通过扫描电子显微镜对形貌进行分析、X射线能谱仪对元素进行分析、裂解-气相色谱质谱联用仪对密封圈以及油基泥浆成分进行分析,结果表明油基泥浆中含有脂肪性叔胺,攻击以偏二氟乙烯-六氟丙烯为主体结构中的质子氢,使密封圈发生腐蚀,导致漏油.
Abstract
The failed sample is a fluororubber sealing ring,which leaked oil during use and was corroded.In order to identify the cause of the sealing ring corrosion,the morphology was analyzed using a scanning electron microscope,the elements were analyzed using an X-ray energy spectrometer,and the components of the sealing ring and oil-based mud were analyzed using a pyrolysis gas chromatography-mass spectrometry.The results showed that the oil-based mud contained fatty tertiary amines,which attack the proton hydrogen in the main structure of vinylidene fluoride hexafluoropropylene,causing corrosion of the sealing ring and resulting in oil leakage.
关键词
钻井/氟橡胶/腐蚀/开裂/失效Key words
drilling/fluororubber/corrosion/cracking/failure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据