摘要
通过化学成分、显微组织、力学性能、硬度和内壁沉积物检查等手段对某电厂超临界锅炉高温过热器出口T91钢管爆裂的原因进行了分析。结果表明:由于该钢管内壁氧化皮脱落堆积,管内蒸汽流通面积减小,造成了钢管过热,从而引起了钢管在薄弱区域爆裂失效。
For the T91 steel pipe bursting at the high temperature superheater exports in a supercritical power plant boiler, some tests had been completed such as chemical composition analysis, microstructure examination; mechanical properties testing, hardness and deposit inspection. The results showed that the oxidation of the tube in the boiler fell off and amassed, the circulation area of steam in pipe reduced, and caused the overheating , all those caused the pipe failured in the weak region.
出处
《理化检验（物理分册）》
CAS
2009年第7期440-442,445,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
超临界锅炉
高温过热器
爆管
氧化皮
过热
supercritical boiler
high temperature superheater
pipe burst
oxide
overheating
