Y10 Y30 Ferrite Magnet Disc with 3M Adhesive

What's ferrite magnets?

Ferrite magnets, also known as Ceramic Magnet, are a type of Permanent Magnet made from a composite of iron oxide and barium/strontium carbonate. They are known for their high resistance to demagnetization and low cost. Ferrite magnets are relatively brittle and have lower magnetic strength compared to other types of magnets like neodymium magnets. They are commonly used in various applications such as loudspeakers, motors, magnetic separators, and refrigerator magnets.

The production of ferrite magnet?

The production of ferrite magnets involves several steps:

1. Raw material preparation: The main raw materials used in ferrite magnet production are iron oxide (Fe2O3) and strontium carbonate (SrCO3) or barium carbonate (BaCO3). These materials are carefully weighed and mixed in specific proportions to achieve the desired magnetic properties.

2. Mixing and milling: The mixed raw materials are then milled together to form a fine powder. This step helps in achieving a homogeneous mixture and reducing the particle size of the powder.

3. Pressing: The milled powder is pressed into the desired shape using a hydraulic press. The powder is placed in a mold and subjected to high pressure to compact it into a solid form.

4. Sintering: The pressed compacts are then sintered in a high-temperature furnace. During the sintering process, the compacts are heated to temperatures above 1200°C (2192°F) in a controlled atmosphere. This allows the particles to fuse together and form a solid magnet with improved magnetic properties.

5. Machining: After sintering, the magnet is machined to achieve the desired shape and dimensions. This may involve cutting, grinding, or drilling depending on the application requirements.

6. Surface treatment: The magnets may undergo surface treatments to improve their corrosion resistance or enhance their appearance. This can involve coating the magnets with a protective layer of epoxy or other materials.

7. Magnetization: The final step is magnetization, where the magnets are exposed to a strong magnetic field to align the magnetic domains within the material. This process ensures that the magnets exhibit the desired magnetic properties.

After these steps, the ferrite Disc Magnet is ready for use in various applications such as motors, speakers, sensors, and magnetic separators.