Ultrasonic testing of Inconel 783 bolt for ultra-supercritical thermal power unit
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摘要: 超超临界火电机组所采用的Inconel 783镍基合金螺栓多次出现断裂失效，结合现场检测案例，根据螺栓的形状、晶粒度、声速等影响因素，对超声检测工艺进行调整并进行试验。试验结果表明，所选取的检测工艺能有效地检测出螺栓裂纹，对该类螺栓的超声检测具有一定借鉴意义。
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关键词:
- Inconel 783螺栓 /
- 超声检测 /
- 裂纹
Abstract: The Inconel 783 nickel-based alloy bolts of ultra-supercritical thermal power unit have been fractured for many times. In this paper, combined with on-site testing cases, the shape, grain size and sound speed of the bolts are analyzed, and the optimum ultrasonic testing technology is selected and the test were carried out, the results showed that it can effectively detect the bolt crack, and has certain reference significance to the ultrasonic detection of this kind of bolt.-
Keywords:
- Inconel 783 bolt /
- ultrasonic testing /
- crack
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