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Permanent Magnets Main Ingreadient
Jun 27, 2017

Permanent Magnets main ingreadient

Sintered ferrite

Sintered Ferrite (Sintered Ferrite) the main raw materials, including BaFe12019 and SrFe12019, according to the different orientation of the magnetic crystal is divided into isotropic and heterogeneous magnets.

Because of its low price and moderate magnetic properties and become the more widely used a magnet. Ferrite magnets are made by ceramic technology, the texture is also relatively hard, but also a brittle material, because the ferrite magnets have good temperature resistance and low price, has become a widely used permanent magnet.

Rubber magnetic

Rubber Magnet (Rubber Magnet) is a series of ferrite products, by the bonded ferrite powder and synthetic rubber composite by extrusion, rolling molding, injection molding and other processes made of soft, Elastic and twisted magnets. Can be processed into strip, roll, sheet and a variety of complex shapes. Rubber magnets from the magnetic powder (SrO6Fe2O3), polyethylene (CPE) and other additives (EBSO, DOP) and other components, by extrusion, rolling made of. Rubber cords can be homosexual or heterosexual, made of ferrite, CPE and certain trace elements, bendable, twistable and rollable. It does not need more mechanical processing can be used, can also be the size of the required size of the repair, rubber magnetic can also be based on customer requirements complex PVC, Beijiao, UV oil. Its magnetic energy product is between 0.60 and 1.50 MGOe. Application of rubber and magnetic materials: refrigerator, message bulletin board, the object fixed to the metal body for advertising and other fasteners, toys, teaching equipment, switches and sensors of the disk. Mainly used in micro motor, refrigerators, disinfection cabinet, kitchen cabinets, toys, stationery, advertising and other industries.


AlNiCo (AlNiCo) is the first to develop a permanent magnetic material, is aluminum, nickel, cobalt, iron and other trace elements composed of an alloy. According to the production process is divided into sintered aluminum nickel cobalt (Sintered AlNiCo) and cast aluminum nickel cobalt (Cast AlNiCo). Product shapes are mostly round and square. The sintered product is limited to a small size, and the roughness tolerances produced by the casting process are better than those of the foundry product, and the magnetic properties are slightly lower than those of the foundry product, but the sintered product is limited to a small size. Processing is better. In the permanent magnet material, cast aluminum nickel cobalt permanent magnet has the lowest reversible temperature coefficient, the working temperature can be as high as 600 ℃ or more. Alnico permanent magnet products are widely used in a variety of instrumentation and other applications.

Samarium cobalt

SmCo (SmCo) is divided into SmCo5 and Sm2Co17 according to the different composition, respectively, for the first generation and the second generation rare earth permanent magnet material. Due to its raw materials are scarce, expensive and make its development is limited. SmCo as a second generation rare earth permanent magnet, not only has a high energy product (14-28MGOe) and reliable coercivity, but also in the rare earth permanent magnet series to show good temperature characteristics. Compared with NdFeB, SmCo is more suitable for working in high temperature environment (> 200 ℃).


Permanent magnet widely used in dry electronics, electrical, mechanical, transportation, medical and daily necessities, and other fields. Such as loudspeakers, telephone receiver permanent magnet; magnetic system of magnetic system; generators, permanent magnet motor pole; machine manufacturing industry used permanent magnet devices (such as surface grinding machine permanent magnet sucker, etc.) and magnetic levitation system, magnetic bearings Magnetic separation system, magnetic separator, magnetic purification water system, magnetron, proton accelerator magnetic system.

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