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Ferrite permanent magnets are divided into two materials, isotropic and anisotropic, and the manufacturing methods include dry pressing and wet pressing. Due to its cheap raw materials and easy mass production, it is the most demanded and most widely used material in the market.

The so-called isotropic magnet is formed by powder metallurgy of magnetic tiles with fine particles, but without any magnetic field arrangement, and is directly formed by pressing. Body magnetic tiles are limited. But the disadvantage is that the magnetic flux density is weak, and some applications may not be able to meet the magnetic force requirements set by customers.

The so-called anisotropic magnet, which is just opposite to the isotropic property of the electric vehicle motor magnetic tile, is made of fine powder during molding, using the arrangement of the high-voltage magnetic field to make the magnetic field a fixed axial or radial direction. After that, it can only be magnetized according to the arrangement of the magnetic field during molding, and the magnetization direction that has been set cannot be changed. The advantages are strong magnetic force and high coercive force, which is the mainstream of the ferrite magnet market.

The main difference between isotropy and anisotropy of ferrite magnets

Isotropic: 1. The raw material is granular, about 3 ~ 4 μm in size. 2. During molding, the raw materials are not magnetized and arranged. 3. It can be magnetized in any direction. 4. Magnetize according to the thickness direction, the magnetic force is about 500 ~ 800 Gauss.

Anisotropy: 1. The raw material is in powder form with a size of about 0.85 ± 0.1 μm. 2. During molding, the powder is arranged by magnetization. 3. When magnetizing, it needs a certain direction, such as axial or radial...etc. 4. Magnetize according to the thickness direction, the magnetic force is about 800 ~ 1,400 Gauss.

Ferrite isotropic molded magnets: mostly single-sided magnets, widely used as magnets for refrigerators, as one of the gift components.

Ferrite anisotropic molded magnet: It is magnetic on both sides, with slightly stronger force, and is widely used, such as electronics, toys, industry, furniture, stationery, gifts...etc. Inverter motor, iron separator, buzzer, magnetic tool, fastener element, induction element, DY image adjustment, healthy magnetic therapy, speaker, door stop, submerged pump, automatic element, movement, magnetic suction seat, Others etc.

PS: The advantages of ferrite include easy magnetization, electroplating or paint baking, low cost, moderate delivery time, medium magnetic strength, single-sided or multi-pole magnetism can be made according to customer needs, easy material acquisition, mass production, etc.