X射线检测技术在输水金属管道焊接检验中的应用

Application of X-ray Inspection Technology in Weld Inspection of Metallic Water Pipelines

摘要:

在现代水网建设工程中,各种用途和各种形式的输水金属管道焊接处,难免会产生一些体积型缺陷(气孔、夹渣等)、面积型缺陷(未焊透、未熔合等)或外观缺陷(错边、咬边等)。针对前述焊缝质量缺陷通过X射线检测技术均能够发现并且对其进行定性、定量的判定和存档追溯。文章简要介绍了目前X射线检测存在的问题、相应对策及检测实例。

Abstract:

In the construction of modern water supply network projects, weld joints of metallic water pipelines with various types and service conditions inevitably contain volumetric defects (porosity, slag inclusion, etc.), planar defects (incomplete penetration, lack of fusion, etc.) and surface defects (mismatched edge, undercut, etc.). X-ray inspection technology can detect the above weld defects and realize qualitative & quantitative evaluation together with file archiving and traceability. This paper briefly introduces the existing problems, corresponding countermeasures and engineering cases of current X-ray inspection.