本文针对锅炉管内壁氧化皮厚度的超声波测量,研究了超声波在氧化皮中的传播速度、氧化皮分层、剥落、氧化皮与金属基体间隙等因素对测量准确性的影响规律,同时给出了典型情况下的测量波形。研究结果对氧化皮厚度超声波测量仪器的使用,提高测量准确性具有指导及参考意义。 In this paper, according to the ultrasonic measurement of the thickness of scale on the inner wall of the boiler tube, the influence of the ultrasonic propagation velocity in the scale, the influence of the oxide layer delamination, the exfoliation, the oxide scale and the gap of the metal matrix on the measurement accuracy is studied. Typical measurement waveform. The result of the study is of guiding and reference significance to the use of scale thickness ultrasonic measuring instrument to improve the measurement accuracy.