摘要
通常认为3PE防腐蚀层的剥离受到包括涂覆阶段热(温度)、涂覆质量、力破坏、光氧老化以及埋地复杂环境的腐蚀等各个方面的影响,其中防腐蚀层预制涂覆以及运行阶段特殊管段温度变化大的热影响不可忽视。本工作关注热效应影响,通过建立管道-防腐蚀层热传递应力-应变模型,借助Ansys有限元分析软件研究管道在防腐蚀层预制过程中产生的热残余应力,讨论温差导致的热残余应力对3PE防腐蚀层不同粘结面剥离的影响。
It is usually believed that the peeling of coating has be strongly affected by the heat generated during coating stage, bad coating quality, unexpected external force, light and oxygen-aging, corrosion in complicated underground environment and other aspects. Among these, the effect of temperature changes during the coating phase of some special pipes, can not be neglected. The present work focuses on the thermal effects. A stress-strain model of pipe-coating＇s heat during transfer process was established. With the help of finite element analysis software （ANSYS）, the thermal residual stress generated in coating process was analyzed, and the hazard influence of heat residual stress on 3PE coating＇s bonding interface was discussed to make it possible to analyze the mechanism of the 3PE coating＇s dibondment.
出处
《腐蚀与防护》
CAS
北大核心
2013年第5期376-380,共5页
Corrosion & Protection
基金
"十二五"国家科技支撑计划01课题(2011BAK06B01)
关键词
3PE防腐蚀层
热残余应力
剥离
有限元分析
3PE coating
heat residual stress
disbondment
finite element analysis
