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炉管的两种主要失效形式是开裂和腐蚀减薄。本文通过人工缺陷样管检测实验和现场实验研究探索磁致伸缩超声导波技术在炉管检测中的可行性。结果表明:炉管结焦对导波传播影响很小,应用磁致伸缩超声导波技术检测时,无须对炉管内表面进行处理;磁致伸缩超声导波技术可以准确检出炉管开裂和腐蚀减薄类缺陷,并可进行轴向定位。磁致伸缩超声导波技术应用可使炉管检测更快速和有效。
The two main failure modes of furnace tubes are cracking and corrosion reduction. In this paper, the feasibility of using magnetostrictive ultrasonic guided wave technology in the detection of furnace tubes is explored through artificial defect-like tube test and field experiment. The results show that the furnace tube coking has little effect on the guided wave propagation. When using the magnetostrictive ultrasonic guided wave technology, it is not necessary to treat the inner surface of the tube. Magnetostrictive ultrasonic guided wave technology can accurately detect the cracking of the tube and the corrosion thinning Class defects, and axial positioning. The application of magnetostrictive ultrasonic guided wave technology makes tube testing faster and more efficient.