摘要
综合应用各种方法对TP304H/SA213T22高温再热器异种钢焊口进行了状态检测与寿命评估,结果认为取样管异种钢焊口已至寿命末期。据此该厂于2004年4月大修中有计划地对高温再热器管的异种钢焊口进行了全面改造,将此焊口安排到炉顶温度较低的部位,避免了泄漏发生后的大面积换管。
Status inspection and service life assessment of welded joints between TP304H / SA213 T22 steels of different sort had been carried out by comprehensively using various testing methods.It had been believed that the welded joint between different steel sorts on sampled tube already reached the end of its service life.Based on this result,the welded joints between different steel sorts on high temperature superheater had been completely retrofitted in a planned major repair in April,2004.The welded joints have been allocated in the space of lower temperature at top of the furnace,a voiding tube replacement in large area after occurrence of leakage.
出处
《热力发电》
CAS
北大核心
2005年第10期72-75,81,共5页
Thermal Power Generation
关键词
异种钢
焊口
状态检测
寿命评估
泄漏
steels of different sort
welded joints
status inspection
service life assessment
