Permanent ferrite magnets are made of Sr0 or BaO and Fe2O3 as raw materials through ceramic technology (pre-sintering, crushing, powder making, pressing, sintering and grinding). The production methods of ferrite are divided into dry pressing isotropic and anisotropic permanent magnet ferrite, and wet pressing is very anisotropic permanent magnet ferrite. In the permanent magnet family, although it has the lowest comprehensive magnetic performance, it is widely used in many application fields (such as automobiles, motorcycles DC motors, starter motors, Relays, separators, holding devices, etc.) are still the ideal preferred permanent magnet materials.
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