关键词: 永磁铁氧体, 极异方性, 多极磁环, 取向磁场

Abstract:

In view of the important influence of radial multipole magnetic field on the manufacture of sintered permanent ferrite multipole magnetic ring, principle and production method of two kinds of radial multipole orientation magnetic fields were presented. On the basis of practice and experiment, the main problems and application rules of orientation magnetic fields were expounded. For electric excitation orientation magnetic field, the selection of pulse current number, application of inverted magnetic field, coil and pole width were mainly analyzed. For permanent magnet orientation magnetic field, the influences of magnetic center deviation and magnet structure size on orientation magnetic field were mainly analyzed.

Key words: permanent ferrite, anisotropy, multiple ring magnet, orientation magnetic field