Big ring ferrite magnet for car audio

What's Ferrite Ring Magnet and the production of Multipole Ferrite Ring Magnet?

A ferrite ring magnet is a type of Permanent Magnet made from a ceramic material called ferrite, which is a combination of iron oxide and other metallic elements. It is known for its high coercivity, meaning it is resistant to losing its magnetism over time.

Ferrite Disk Magnets, Anisotropic Ferrite Magnets, Isotropic Ferrite Magnets

The production of Ferrite Permanent Magnets involves several steps:

1. Raw material preparation: The raw materials, including iron oxide, metal oxides, and other additives, are mixed together in specific proportions to create the ferrite powder.

2. Powder processing: The ferrite powder is then compacted into a desired shape using various techniques such as dry pressing or injection molding. This process helps to form the basic shape of the magnet.

3. Sintering: The compacted ferrite rings are heated to high temperatures in a controlled atmosphere, typically in a kiln. This process helps to fuse the particles together and create a solid and dense magnet.

4. Machining: After sintering, the ferrite rings are often machined to achieve the desired shape and dimensions. This may involve cutting, grinding, or drilling the magnet to meet specific requirements.

5. Magnetization: The final step involves magnetizing the ferrite ring magnet. This is typically done by subjecting the magnet to a strong magnetic field, aligning the magnetic domains within the material.

The production of Ferrite Ring Magnets is a well-established and widely used process due to their low cost, high resistance to demagnetization, and excellent stability over a wide range of temperatures. They find applications in various industries, including electronics, automotive, and telecommunications.