Y30BH cylinder ceramic magnet for speaker magnets

What's Ferrite Magnet?

A ferrite magnet is a type of Permanent Magnet made from a compound of iron oxide (Fe3O4) and other metallic elements such as nickel, zinc, or manganese. It is also known as a Ceramic Magnet due to its brittle and ceramic-like appearance. Ferrite magnets are widely used because of their low cost, high magnetic properties, and resistance to demagnetization. They are commonly found in various applications such as speakers, motors, magnetic separators, and refrigerator magnets.

Anisotropic Ferrite Magnets, Ferrite Permanent Magnets, Permanent Ferrite Magnet

The production of ferrite segment magnet?

The production of ferrite segment magnets involves several steps:

1. Raw material preparation: The main ingredient for ferrite magnets is iron oxide, along with other materials such as strontium or barium carbonate. These materials are mixed together in specific proportions to create a homogeneous mixture.

2. Mixing and grinding: The mixture is then placed in a ball mill or attritor, where it is mixed and ground to reduce the particle size and ensure uniform distribution of the ingredients.

3. Pressing: The powdered mixture is then compacted into the desired shape using a hydraulic press. The press applies pressure to the powder in a mold, forming a green compact.

4. Sintering: The green compact is then sintered in a furnace at high temperatures, typically around 1200-1300 degrees Celsius. During sintering, the compacted powder particles bond together, resulting in a solid, dense magnet.

5. Machining: After sintering, the magnet is machined to achieve the desired dimensions and shape. This may involve processes such as grinding, cutting, or drilling.

6. Surface treatment: The magnet surface may be coated or plated to protect it from corrosion or to improve its appearance. Common coatings include epoxy, nickel, or zinc.

7. Magnetization: The final step is magnetization, where an external magnetic field is applied to align the magnetic domains within the magnet. This process gives the magnet its magnetic properties.

Once the production process is complete, the ferrite segment magnets can be used in various applications, such as electric motors, speakers, magnetic separators, and magnetic resonance imaging (MRI) systems.