Magnetization Pattern

Magnetization Pattern

There are various magnetization methods depending on the application, material, and shape of the magnet.

In the case of simple N⇔S (thickness direction and radial direction) magnetization, it is possible to magnetize using an air-core coil, but multipolar magnetization of bond magnets and magnetization of assembled products depend on magnet specifications. It is necessary to manufacture a dedicated magnetizing yoke (jig) to match.

Typical examples of magnetization types are shown below. However, it should be noted that magnetization may be called differently depending on the manufacturer.

The number of magnetized poles can be arbitrarily selected according to the shape of the magnet. However, in the case of multi-pole magnetization, there is a limit to the pitch of multi-pole magnetization due to the balance between the magnetizing current and the coil wire diameter. Also, when magnetizing an anisotropic magnet shaped by magnetic field orientation, it is necessary to magnetize with attention to the direction of the magnetic field.