Magnetic particle inspection is a particularly effective method
to highlight and find surface discontinuities of a material
Detail of a plant for magnetic particle inspection
Inclusion does not outcropping on a detected bearing ring to control magnetic particle
Cracks caused by the operation incorrect grinding (grinding abuse) detected control magnetic particle on a gear made from a hardening steel (18NCD5)
The magnetic particle inspection can be performed with the dry or wet powders.
The powders have a magnetic permeability with a relatively low rate of residual magnetism, so that you keep attached to the material as long as the magnetic action is applied.