Method 1: Re magnetize

Recharging is the most commonly used method to restore the magnetism of a magnet. The following methods can be used for re magnetization:

1. Place the poles of the magnet closer to the poles of the stronger magnet and hold for a certain period of time.

2. Wrap the magnet around a stronger magnet and rotate it repeatedly for a certain amount of time.

Method 2: High temperature demagnetization

High temperature demagnetization can cause the magnetism of the magnet to disappear and then re magnetize it. The following methods can be used for high-temperature demagnetization:

1. Place the magnet in the oven and heat it to 70-80 degrees Celsius.

2. Hold for 10-15 minutes, then remove and cool.

3. Then use the method of re magnetization for magnetization.

Method 3: Demagnetizer demagnetization

A demagnetizer can completely eliminate the magnetism of a magnet and then re magnetize it. The following methods can be used to demagnetize the demagnetizer:

1. Place the magnet in the demagnetizer.

2. Press the demagnetization button and hold for a certain period of time.

3. Remove the magnet and recharge it.