美富国际(实业)有限公司
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描述
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描述
- Ferrite (Ceramic) Magnet is manufactured from oxide materials using powder metallurgical process. Ceramic magnet is most widely used because of its low cost, high-energy, good electric insulation and excellent resistance to demagnetization.
- The most common type of ceramic magnets are anisotropic strontium, anisotropic barium and isotropic barium magnet.
- Ferrite (Ceramic) Magnets are essentially composed of oxide materials with Barium Carbonate or Strontium Carbonate, manufactured under a powder metallurgical process.
- The feature of low recoil permeability, along with the high coercive force, makes them highly resistant to demagnetizing fields. In addition, their relatively low specific density and economical cost are also very attractive to the magnet designers.
- When designing the ferrite magnets for a particular application, primary consideration should be given to its shape limitation due to the powder metallurgical manufacturing process and the temperature dependence of ferrite materials.
- Ferrite Magnets has good anti-corrosion performance, no surface treatment needed. There are two manufacturing process for ferrite magnets:
- Dry Process & Wet Process. By dry process, can produce isotropic & anisotropic magnets; by wet process, only anisotropic magnets can be produced. Isotropic ferrite magnets are not oriented and can be magnetized in any direction; anisotropic ferrite magnets are different, they are all oriented in the manufacturing direction, and should be magnetized in the direction of orientation.
- For dry process, the tool can be changed and developed easily, while for wet process, it is complicated to change the tool and the tooling charge is much higher.
- At present, we have put our emphasis on arc segment magnets for electric motors, disc magnets and block magnets for special applications.
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