高温锅炉过热器管的失效分析  

Analysis on Invalidation of Superheater Pipes of High Temperature Boiler

作　　者：贺株莉[1] 杨丰收 

机构地区：[1]广东商学院,中国广州510320 [2]平圩发电厂,中国淮南232089

出　　处：《湖南师范大学自然科学学报》2006年第4期39-42,52,共5页Journal of Natural Science of Hunan Normal University

基　　金：国家自然科学基金资助项目(60273014)

摘　　要：通过对高温锅炉后屏过热器运行后的管材进行金相分析、蠕变孔洞观察及评级、高温持久实验,结合壁温数据,确定在影响材料寿命的球化、蠕变、碳化物形成、材料的氧化腐蚀等诸因素中的主要因素,采用综合分析法对过热器寿命进行预测,对其寿命作出科学全面的评判和检修建议,把被动临检变为定期检修,避免大规模盲目换管,保证其超期安全运行.Through Metallographieal analysis, observe and grade creeping holes and do high-temperature ereeprupture experiments to the pipes after the high temperature boiler rear semen superheater operating, unifies the wall warm data, determined the primary factor in the various factors of influencing material life spheroidization, creeping, the earbide forms, the material oxidized corrosion and so on, trees the synthesis analytic method to forecast the superheater life, and excepts its life using the science comprehensive analysis and the overhaul suggestion, passively visits and searches becomes the preventive maintenance, avoids massively blindly trading the pipe, guarantee it going over the time limit the safe operation.

关 键 词：锅炉管 后屏过热器 蠕变损伤 珠光体球化 

分 类 号：O521.2[理学—高压高温物理]