Promotional Hard Disc Ferrite Magnet

What's Ferrite Magnet?

A ferrite magnet, also known as a Ceramic Magnet, is a type of Permanent Magnet made from a composite of iron oxide and barium or strontium carbonate. It is a hard, brittle material that exhibits high resistance to demagnetization and corrosion. Ferrite magnets have a relatively low magnetic strength compared to other types of magnets, but they are widely used due to their low cost, excellent temperature stability, and resistance to moisture and chemicals. They are commonly found 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, including the preparation of raw materials, mixing and milling, pressing, sintering, and finishing.

1. Raw Material Preparation: The primary raw materials used in ferrite magnet production are iron oxide (Fe2O3) and strontium carbonate (SrCO3) or barium carbonate (BaCO3). These materials are carefully selected and processed to ensure high purity and consistent quality.

2. Mixing and Milling: The iron oxide and carbonate materials are mixed in precise proportions to achieve the desired magnetic properties. The mixture is then milled to a fine powder to ensure uniform distribution of the components.

3. Pressing: The powdered mixture is compacted into the desired shape using hydraulic or mechanical presses. The pressing process applies high pressure to the powder, causing it to adhere and form a solid mass known as a green compact.

4. Sintering: The green compact is then subjected to a high-temperature sintering process, typically in a controlled atmosphere furnace. During sintering, the compact is heated to a temperature below its melting point, allowing the particles to bond together and form a dense, solid structure. The sintering process also helps to enhance the magnetic properties of the material.

5. Finishing: After sintering, the magnet is cooled and undergoes various finishing processes, such as grinding, machining, and surface treatment, to achieve the desired shape, dimensions, and surface quality. The finished magnets may also be magnetized through exposure to a strong magnetic field.

Throughout the production process, strict quality control measures are implemented to ensure that the ferrite magnets meet the required specifications and performance standards.

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