The method relies on the excitation of a magnetic field in the tested object and the use of a fine-grained ferromagnetic powder to detect magnetic scattering fields arising on the surface of the tested element, in the areas of surface and subsurface material discontinuities.

Magnetic powder method – testing capabilities

• detection of surface and subsurface defects (inclusions, pores, blisters) of all ferromagnetic materials;
• basic detection of surface, thermal and mechanical defects – grinding cracks, hardening cracks, etc.

Magnetic powder method – equipment

• yoke defectoscopes Magnaflux, Parker;
• Magnaflux fluorescent and black suspensions;
• UV and white light illuminators;
• magnetic indicators;
• standards.