Ferrite Magnets

Ferrite magnets are sintered permanent magnets and are composed of Barium or Strontium Ferrite. This class of magnets has a good resistance to demagnetization and has the popular advantage of having a low cost. These are very hard and brittle, and need special machining techniques and should be machined in an unmagnified state. Our unit is equipped to machine these materials as per required specifications. Having a low cost, Ferrite magnets have a wide application area, ranging from motors and loudspeakers to toys and crafts. They form the most extensively used permanent magnets today.

Manufacturing Methods

Pressing and Sintering:

These processes involve pressing very fine ferrite powder in a die and later sintering the pressed magnet. All the fully dense Ferrite magnets are manufactured in this manner. The ferrite magnets can also be wet or dry pressed. The method of wet pressing yields better magnetic properties, but on the other hand poorer physical tolerances. The Sintering process requires subjecting the particular material to high temperatures that results in fusing the pressed powder together. The resultant of this process is a solid material that is created. Magnets that are manufactured by this process are given a finish machining. The surface finishes and tolerances are not acceptable when the finish machining is not given.