摘要
石化系统加热炉炉管常见的材质损伤机理,包括珠光体球化、石墨化、蠕变、σ相脆化、渗碳、脱碳、晶间腐蚀、渗氮和裂纹等,总结了上述损伤机理可能发生的条件及其危害,介绍了金相检测等技术在炉管材质损伤检测方面的应用。基于对加热炉炉管的现场金相检测经验,给出了五种典型炉管材质损伤的实际案例,并简要介绍了其应对措施。
The material damage mechanisms of the heater tubes in petrochemical industry include pearlier spheroidization,graphitization,creep,Sigma phase embrittlement,carburization,decarburization,intergranular corrosion,nitriding and cracking,and so on.It summarizes the possible conditions for the occurrence of the damage mechanism mentioned above and their harm.The paper introduces the application of metallographic examination in checking material damage of the tubes.Based on the experience of the in-situ metallographic examination of the heater tubes,five practical cases of typical tube material damage are presented and the countermeasures are introduced briefly as well.
出处
《石油化工设备技术》
CAS
2012年第4期31-35,70,共5页
Petrochemical Equipment Technology
关键词
加热炉
炉管
材质损伤机理
金相检测
渗碳
蠕变
Heater tubes
Material damage mechanism
Metallographic examination
Carburization
Creep