1. Unsaturated magnetization: refers to magnetization energy that does not reach 95% of the saturated magnetization energy. This type of magnetization is reversible and the residual magnetism gradually decreases with time and changes in the magnetic field.

2. Saturation magnetization: refers to the energy required for magnetization energy to reach the turning point of magnetization characteristics, generally requiring 1.5 or 2 times the intrinsic coercivity (or remanence), and there will be no demagnetization phenomenon at this time.

3. Oversaturation magnetization: At this point, the magnetization energy reaches more than three times the intrinsic coercivity, and the surface magnetism only undergoes slight changes with changes in the magnetic field. This method is adopted for environments with high magnetic energy requirements.

A magnetizer is a tool used to magnetize magnetic materials or devices by applying a magnetic field to neodymium iron boron products that need to be magnetized. If the magnetized magnetic field cannot reach the technical saturation magnetic field, the residual magnetization Br and intrinsic coercivity Hcj of the permanent magnet cannot reach the expected values.

The energy of the magnetizing machine is first determined by the size and direction of the magnetized product magnet, and then the size of the magnetizing fixture is determined. The size of the magnetic field at the center of the fixture is calculated, which should be 3-5 times the coercivity of the magnet. Then, the magnetizing current is calculated, and the energy storage capacity of the magnetizing machine is determined based on the current and voltage of the magnetizing machine. Finally, the energy of the magnetizing machine is determined.