300M钢纯洁度磁粉检验磁痕现象的分析

THE INDICATIONS ANALYSIS OF THE 300M STEEL CLEANLINESSBY MAGNETIC PARTICLE INSPECTION

采用交、直流磁粉检验并结合金相试验、电子探针试验及微量元素含量分析的方法，对３００Ｍ钢磁痕现象的本质进行了分析。结果表明，采用磁粉检验方法对航空优质钢进行纯洁度检验是可信的。

Alternating and direct current wet continuous magnetic particle inspection(MPI) methods,combined with metallographic examination and trace element microanalysis method,were used to determine the nature of the 300M steel magnetic particle indications.The final results show that the magnetic particle inspection method is acceptable for the cleanliness inspection of aircraft-quality steels.