Badge Magnets Manufacturer Introduces Why Magnets Demagnetize

Magnets often experience the weakening or disappearance of magnetic force during use. This situation often occurs. Badge Magnets  manufacturer summarizes the reasons for magnet demagnetization as follows:

1. There are too many impurities in magnetic materials, resulting in weak magnetism. High-quality magnets generally have a longer lifespan. In the case of inferior magnets, since the material is not very pure, demagnetization will occur after a period of use.

2. Impact will cause magnet demagnetization, such as high-frequency impact, etc. Be very careful about transportation.

3. The magnet is demagnetized or demagnetized after injection. The injection molding temperature is basically above 120°C. Therefore, a short injection of 2 to 3 seconds may cause partial demagnetization.

4. The magnet is demagnetized after hot pressing, and the glass fiberboard is often used for hot pressing at a temperature above 150°C.

5. After baking in the oven, the magnet is demagnetized.

6 In a strong magnetic field environment, the strength of the test magnet itself disappears, or the N/S pole changes.