Ultrasonic Testing of Weld in N08810 Nickel-based Alloys

Aiming at the ultrasonic inspection of N08810 nickel-based alloy weld, analysis is made on its severe attenuation and low signal-to-noise ratio, which affects the defect judgment, positioning and quantitative evaluation. At the same time the probe, the test blocks for ultrasonic inspection of the nickel-based alloy weld, the signal to noise ratio and the DAC curve are also discussed. The results showed that longitudinal twin oblique angle beam probe (TRL) developed obvious was effective in ultrasonic testing of welds N08810 nickel-based alloy of coarse-grained material and it improved the signal-to-noise ratio and the defect detection rate. Our self-designed and manufactured test block can meet the detection requirements. Finally, the detection process of ultrasonic N08810 weld is summarized; the technology has been applied in engineering practice and achieved good results.