蒸汽发生器接管安全端焊缝超声检验

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

Ultrasonic Examination for Safe End to Nozzle Dissimilar Metal Welds of Steam Generator

摘要: 蒸汽发生器安全端焊缝为异种金属连接的窄焊缝结构形式,填充材料为镍基合金152/182(690材料),内部组织的各向异性严重,采用超声波检测时可能导致出现假信号,缺陷的定位误差增大等问题。采用不同聚焦深度和角度的接触式聚焦双晶探头进行分层检验,可以获得比较好的测量结果。现场实际检查中,所用方法不仅能发现内部存在的缺陷,还能在外表面检测到内表面的线性显示,验证超声检验方法在蒸汽发生器接管安全端异种金属焊缝检测中的可行性。
- 蒸汽发生器 /
- 安全端焊缝 /
- 超声检查
Abstract: The safe-end weld of steam generator is narrow seam weld with dissimilar metal, the filling material is nickel alloy 152/182（material 690）. The interior structure is of great anisotropic, and fake signal may occur during the defect detection by ultrasonic wave and the error for defect location may be increased. Stratified inspection by ultrasonic transducers with different angle and focus is a practical method which is verified by the real inspection while the linear indication in the inside surface besides the interior flaws are detected.
- Steam Generator /
- Safe end weld /
- Ultrasonic examination