钢管超声波检测时缺陷波形的识别  

Waveform Identification of Defects in Ultrasonic Testing of Steel Tubes

作　　者：汪超 熊伟 李雅可 

机构地区：[1]南京巨龙钢管有限公司,南京210061

出　　处：《无损检测》2011年第4期75-78,共4页Nondestructive Testing

摘　　要：双面埋弧焊钢管焊缝超声检测时经常出现回波超标问题,其中的伪缺陷严重干扰了检测人员对缺陷的判定。实例介绍了夹杂物、焊趾裂纹和成分偏析的回波特征,并提出了多种伪缺陷波形的判别方法。The echo height exceeding prescrihed level often appears in the double-submerged arc-welded steel pipe weld ultrasonic detection,which is to seriously affect defects judgements for inspection personnel.The characteristic wave echo of some defects such as inclusion,crack and chemical composition segregation was introduced by examples,and the judge methods for false defect wave were putforward also.

关 键 词：超声波检测 曲率半径 伪缺陷识别 

分 类 号：TG115.28[金属学及工艺—物理冶金]