Ferrite permanent magnet ring is a ring-shaped permanent magnet product made of ferrite magnetic materials as the main raw material, through batching, pressing, sintering and finishing processing. Ferrite magnet is a traditional oxide permanent magnet material, mainly composed of barium ferrite and strontium ferrite, with the characteristics of low cost, stable performance, good corrosion resistance and wide temperature adaptability. As a mainstream structural form of ferrite magnets, the ring-shaped ferrite permanent magnet has a hollow annular structure, which can be divided into full circle ring, special-shaped ring, flat ring and other types according to the structural difference, and is one of the most widely used ordinary permanent magnet components in the industrial field. Compared with rare earth NdFeB magnets, ferrite magnetic rings have lower magnetic energy product, but their cost is only a fraction of NdFeB magnets, and they have excellent temperature stability and anti-demagnetization performance, which will not produce obvious magnetic attenuation in long-term high-temperature and conventional working environments.

In terms of material performance and structural advantages, ferrite permanent magnet rings have high chemical stability, strong oxidation resistance and corrosion resistance, and can work stably in humid, dusty and conventional corrosive environments for a long time without surface rust or magnetic performance degradation, so no complex surface anti-corrosion treatment is required. The product has a wide working temperature range, with a maximum working temperature of up to 120℃, and the magnetic performance changes little with temperature, avoiding the failure of magnetic components caused by temperature fluctuation. The annular hollow structure of the ferrite magnetic ring makes it have unique magnetic field distribution characteristics, with uniform circumferential magnetic field and good magnetic symmetry, which is very suitable for rotary equipment and magnetic induction devices that require uniform circular magnetic field. In addition, ferrite magnetic rings have good mechanical stability, high hardness, not easy to deform and wear, and long service life. The product has strong process adaptability, can be mass-produced, and can be customized in outer diameter, inner diameter, thickness and tolerance according to user needs, with high cost performance and strong practicability.

Ferrite permanent magnet rings are widely used in civil industry, household appliances, mechanical equipment and other fields due to their excellent cost performance and stable performance. In the household appliance industry, they are the core magnetic components of refrigerator compressors, washing machine motors, fan motors, water pump motors and other small household appliance motors, providing stable magnetic field power for the operation of household appliances. In the mechanical transmission industry, ferrite magnetic rings are used in magnetic couplings, magnetic transmission devices, mechanical damping components and bearing magnetic positioning parts, realizing non-contact transmission and stable mechanical operation. In the electronic industry, they are applied to magnetic shielding rings, inductive magnetic rings, noise reduction magnetic rings of electronic equipment, which can effectively filter electromagnetic interference and improve the stability of electronic equipment operation. In addition, ferrite permanent magnet rings are also widely used in automobile auxiliary motors, toy motors, instrumentation sensors, industrial ventilation equipment and other fields. As a mature and stable traditional magnetic material product, ferrite permanent magnet rings still occupy an irreplaceable mainstream position in the middle and low-end permanent magnet market with their absolute cost advantage and stable performance.