汽轮发电机合金轴瓦的超声波检测

Ultrasonic Testing of Alloy Bearing Bush for Turbo-Dynamo

摘要: 在研制了结合良好与结合不良并存的合金轴瓦参考试块和系列延迟与聚焦探头的基础上，调整合金与衬背结合面的检测灵敏度，完成了合金轴瓦与衬背结合质量的超声波检测工艺。应用结果表明，采用该项技术可以检测最小厚度为1 mm的合金结合面，并能迅速对结合不良部位进行识别和定位。

Abstract: Based on the developing of reference test blocks with good and bad bonds, and on the series of delay probe and focusing probe, the ultrasonic testing techniques for the combination quality about the Babbitt metal with backing were realized via adjusting the detection sensitivity in the bonding interface of alloy with backing. The results showed that this technique could detect the alloy joint surface with minimum thickness of 1 mm, and it could quickly identify and locate the part of bad bondage.