Magnetic particle inspection (MPI) is a fast, sensitive non-destructive testing method for finding surface and slightly subsurface flaws in ferromagnetic materials — cracks, laps, seams, and inclusions in welds, castings, forgings, and machined parts. The method magnetizes the component and applies magnetic particles that gather at flux-leakage sites, making even hairline cracks clearly visible.
The DELTA PM-25 permanent magnetic yoke is a portable MPI tool that generates the required magnetic field without external power. Its permanent magnets provide strong, stable magnetization for on-site weld inspection, structural steel checks, and maintenance testing in shipbuilding, pressure-vessel fabrication, pipeline construction, and heavy machinery repair. The yoke’s compact design reaches confined areas where bulky electromagnetic yokes cannot go, and instant magnet control keeps inspections quick.
For weld quality control and in-service crack detection on carbon steel and other ferromagnetic alloys, magnetic particle inspection with the DELTA PM-25 delivers immediate, reliable results at low cost per inspection.
