Magnetic-particleinspection USES magnetic fields to locate surface and subsurface discontinuities in ferromagnetic materials.
磁粉探伤法是用磁场探测铁磁性材料表面和次表面的不连续性。
2
As such, magneticparticleinspection for the screw thread of the drill collar is very necessary and important.
因而钻铤内外螺纹的磁粉检测十分必要和重要。
3
Perform magneticparticleinspection, fluorescent penetrant inspection, eddy current inspection, temper etch inspection, etc. and interpretation of results.