螺旋管圈水冷壁鳍片焊缝专用超声检测技术  

The Special Ultrasonic Testing Technology for Fins Weld of Spiral Water Cooled Wall Tube

作　　者：严祯荣[1,2] 陈学东[2] 罗晓明[1] 

机构地区：[1]上海市特种设备监督检验技术研究院,上海200333 [2]合肥通用机械研究院,合肥230031

出　　处：《无损检测》2015年第6期57-60,共4页Nondestructive Testing

基　　金：安徽省博士后研究人员科研活动经费资助;上海市质量技术监督局科研计划资助项目(2011-48)

摘　　要：针对螺旋管圈水冷壁鳍片焊缝裂纹的产生特性,开发了专用微型超声波检测探头和超声波检测仪器。在刻有近似鳍片裂纹和平底孔的螺旋管圈水冷壁试件上进行了验证性检测试验。在鳍片宽度仅5mm的狭长检测空间,通过鳍片单一面耦合,实现了双面鳍片焊缝缺陷检测,能够方便、有效地应用到超超临界锅炉螺旋管圈水冷壁检修环节。For features of fins crack initiation of spiral water cooled wall tube,a special miniature ultrasonic probe and ultrasonic testing instrument were developed.The confirmatory tests were carried out on specimen of spiral water cooled wall tube,which were engraved with the approximate fins weld crack and flat bottom holes.The confirmatory tests have realized detection of the double fins weld defect in the long and narrow space detection of the only 5 mm fin width,through the fins of the single surface coupling,which can be conveniently and effectively applied to the overhaul of spiral water cooled wall tube of ultra supercritical boiler.

关 键 词：超超临界锅炉 螺旋管圈水冷壁 鳍片焊缝 专用微型超声探 

分 类 号：TG115.28[金属学及工艺—物理冶金]