How to demagnetize a strong magnet?

How to demagnetize a strong magnet?
According to the use of powerful magnets, certain demagnetization methods can be developed.
1) High temperature demagnetization method:
The main operation of the high-temperature demagnetization method is to heat the magnet in a high-temperature furnace. After high-temperature treatment, the magnetism of strong magnets will be removed, but during the heating process, the high temperature will directly cause significant changes in the structure of the objects inside the magnet. Therefore, this demagnetization method is generally used for discarded and recycled magnets.
2) Vibration demagnetization method:
The operation of this method is very simple. It is a magnet that vibrates strongly and strongly. After vibration operation, the internal structure of the magnet changes, thereby changing the physical properties of the magnet. Generally speaking, the effect of using this demagnetization method is significant. Not big, only a small amount of demagnetization can be used temporarily.
3) Magnet AC demagnetization method:
This demagnetization method involves placing a magnet in a space that can generate an alternating magnetic field. After the interference of the AC magnetic field, the internal structure of the magnet will be destroyed, thereby achieving the effect of demagnetization. This method is more common. Demagnetization method.
The above three methods are effective for demagnetizing strong magnets, but we still need to choose the AC demagnetization method in daily life. It has better demagnetization effect and high efficiency than high-temperature demagnetization and vibration demagnetization. It is currently the most commonly used in industrial production. Method.