Ferrite / Ceramic permanent magnets are technically known as hard ferrite materials (when exposed to a brief external magnetic field, the material retains magnetism due to having high coercivity, Hc). They are not the same as soft ferrite materials as used in transformer cores (which do not retain magnetism after exposure to a brief magnetic field because soft ferrite materials have low coercivity). The high coercive force of Ferrite Magnets means they are classified as hard materials, like all the other permanent magnets.
Block Ferrite magnets
Ferrite magnets are extremely popular due to their characteristics. Ferrite magnets are corrosion free – for long term performance they are superb; if looked after they are capable of exceeding most products life-cycles. Ferrite magnets can be used up to +250 degrees C (and in some cases up to +300 deg C). Ferrite magnets are also low cost, particularly in high volume production runs.
Customized Ferrite Magnets
It may make the handed, circular, various geometric figures, sheet, coiled material (max. Width 780MM, thickness 0. 25-8MM, indefinite length ) according to the consumer's requirements. Its surface may implement UV oil coating, spray lacquer, printing, lamination, double-faced adhesive tape, PVC processing and so forth. The products are widely applicable for the small-size precise motor, generator etc in aspects of the drive equipments; Loud-speaker, earphone, microphone, sound pick-up etc in aspects of the acoustic facilities; Relay, switch, sensor, instrument and meter and so no in aspects of the communication installation etc. The suction magnet is mainly used for the advertisement propaganda, electric refrigerator door sealing strip, toy and so forth. The correcting magnet is used in TV image tube, magnetic coupler, electronic lock etc.
Ferrite performance parameters table:
Value(min/typical in our factory)