叶片荧光渗透检测背景过度的产生原因及改进方法

摘要

某机压气机转子叶片在荧光渗透检测时发现荧光背景过度的现象,经过第一次除氧化膜和第二次除氧化膜返修处理后,查找出背景过度的原因是叶片表面氧化膜未去除干净.因此,在压气机转子叶片的荧光渗透检测前增加了目视检查工艺,确保叶片表面氧化膜去除干净.%The fluorescence background of compressor rotor blade is excessive when it is detected by fluorescence penetrant inspection.After the first and the second removing of the oxide film,the cause of excessive background is that the oxide film on the surface of the blade is removed incompletely.Therefore,a visual inspection process is added before the fluorescent penetration test of the compressor rotor blade to ensure the surface oxidation of the blade is removed completely.