Magnetic particle flaw detector

Magnetic particle inspection is suitable for the detection of defects on the surface and near the surface of ferromagnetic materials. Because the discontinuous magnetic marks are piled on the surface to be inspected, the shape, position and size of the discontinuities can be displayed intuitively, and their properties can be roughly determined . Magnetic particle inspection has high sensitivity to surface and near-surface defects, and the detectable discontinuity width can reach 0.1μm. Comprehensive use of multiple magnetization methods, magnetic particle inspection is almost independent of the size and geometry of the workpiece, and can detect the workpiece Defects in all directions.

magnetic particle flaw detector

Magnetic particle inspection is a method in which magnetic powder is used as a display medium to observe defects. After the ferromagnetic material workpiece is magnetized, due to the existence of discontinuity, the magnetic field lines on the surface and near the surface of the workpiece are locally distorted to generate a leakage magnetic field, which absorbs the magnetic powder applied on the surface of the workpiece, and forms a visible magnetic field under suitable light. Marks, which show the location, size, shape, and severity of the discontinuity.