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How long does the neodymium magnets last?

See what magnets, the life of permanentneodymium magnetsis endless, and the life of coilneodymium magnetsis only available when energized.
Introduction to the three major factors affecting the magnetic force of magnets.
The magnetic factor affecting the magnet: temperature, due to the type of magnet (for example: ferrite magnet, neodymium iron boron magnet, bonding neodymium iron boron, aluminum nickel cobalt, cobalt, iron chromium cobalt, injection ferrite, etc.) and materials There are dozens of them, all of which have corresponding temperature limits. Generally speaking. During the use of the product, there is no demagnetization below the temperature limit of the magnet. (For example: the maximum temperature of the brushless external motor is 80-100 degrees. When the demagnetization is not more than 5%, the material of the magnet is generally 120 degrees. Of course, this is the material for the neodymium iron boron magnet.) The magnet retreats without demagnetization and life, and is completely dependent on the temperature of the product used and the temperature resistance of the magnet.
The magnetic factor affecting the magnet 2: the existence of alternating magnetic field. Anyone who knows a certain part of the magnet knows that the magnet is divided into N, S or multipole. If there is another magnetic field effect around the magnet, it will offset the magnetic force of some of the magnets. This is also what people call demagnetization within the range of operating temperatures.
The magnetic factor affecting the magnet is three: mechanical vibration. This has a certain relationship with the assembly. The magnet rubs into the product during the assembly process. Because the material properties of the magnet are fragile, the body wears and the size become smaller, so that the magnet is slowly weakened.
So, when choosingneodymium magnetsand product design, please consider the above three points.

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