TP304H/SA213T22异种钢焊口的状态检测与寿命评估  

STATUS INSPECTION AND SERVICE LIFE ASSESSMENT OF WELDED JOINTS BETWEED TP304H / SA213T22 STEELS OF DIFFERENT SORT

作　　者：赵彦芬[1] 周江[2] 赵林松 张路[1] 俞基安[2] 徐仲雄[2] 

机构地区：[1]苏州热工研究院,江苏苏州215004 [2]北仑第一发电有限责任公司,浙江宁波315800

出　　处：《热力发电》2005年第10期72-75,81,共5页Thermal Power Generation

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.

关 键 词：异种钢 焊口 状态检测 寿命评估 泄漏 

分 类 号：TG411.7[金属学及工艺—焊接]