Fan-shaped rotating magnetic field magnetizing coil for disc part magnetic powder inspection

The utility model relates to a fan-shaped rotating magnetic field magnetizing coil for disc part magnetic powder inspection. The fan-shaped rotating magnetic field magnetizing coil comprises a magnetizing coil group I and a magnetizing coil group II, wherein the magnetizing coil group I and the magnetizing coil group II are arranged by an angle of 120 degrees in a crossed manner and form a fan-shaped magnetizing device; and each of the magnetizing coil group I and the magnetizing coil group II is arranged in a multi-turn number mode according to inspection needs. The fan-shaped rotating magnetic field magnetizing coil disclosed by the utility model is safe to operate and wide in application range; the detection is reliable and stable, and the magnetic powder inspection effect is absolutely guaranteed; a rotating magnetic field obtained on the surface of a detected workpiece is relatively uniform; the service life is long, and the maintenance operation is reduced; the inspection requirements on disc parts with different diameters are met; and moreover, the automatic inspection and manual inspection of key parts are conveniently realized, and the fan-shaped rotating magnetic field magnetizing coil is convenient, rapid and high in efficiency.