Email Us neo@atechmagnet.com CALL US NOW +86-010-53345989
Huatai Xinding(Beijing)Metal Materials Co., Ltd.
En
Three Major Factors Affecting the Magnetic Force of Magnets
Magnetic solution
provider & manufacturing expert,
25 years of professional experience
Innovative solutions for sustainable developments toward a better world
Striving for excellence and continuous improvements to support your success

Three Major Factors Affecting the Magnetic Force of Magnets

How long is the service life of a magnet?

Depending on what kind of magnet it is, the life of a permanent magnet is endless, while the life of a coil magnet is only when it is energized.


Introduction to the three major factors affecting the magnetic force of a magnet:

Factor1: temperature. Depending on the type of magnet (for example, ferrite magnet, neodymium iron boron magnet, bonding neodymium iron boron, alnico, cobalt, iron chromium cobalt, injection-molded ferrite, etc.) and types of materials, all of which have corresponding temperature limits. Generally speaking, during the application, there will be no demagnetization if the temperature is lower than the limit of the magnet. (For example, the maximum temperature of the brushless outer-rotating motor is 80-100 ℃. In the case of ensuring that the demagnetization will not exceed 5%, the magnet material of 120 ℃ is generally used. Of course, this is for the material of the neodymium iron boron magnet.) So the non-demagnetization and lifetime of the magnet depend on the temperature and the selection of the magnet's temperature-resistant material.


Factor2: the existence of an alternating magnetic field. Anyone who learns something about magnets knows that magnets can be divided into N, S poles or multiple poles. If there is another magnetic field around the magnet, it will offset a part of the magnet's magnetic force. This is why people say that some magnets demagnetize within the range of operating temperature.


Factor3: mechanical vibration. This is related to the assembly process. The magnet rubs against the product during the assembly process. Because the material of the magnet is fragile, the body wears and the size becomes smaller, so the magnet will gradually weaken.

Related News
  • Re-use of Magnets

    Re-use of Magnets

    October 13, 2020Scientists at the Ames research lab have developed a method to grind and repurpose neodymium magnets found as a component of discarded computers. The process was developed at the U.S. Department of En...view
  • Three Factors Affecting the Magnetic Force of Magnet

    Three Factors Affecting the Magnetic Force of Magnet

    July 12, 2021One factor that affects the magnetic force of the magnet: temperature. There are dozens of different types of magnets (for example: ferrite magnets, neodymium iron boron magnets, bonded neodymium iron...view
  • Use of Environmentally Friendly Chemicals to Recover Rare Earth Metals (2)

    Use of Environmentally Friendly Chemicals to Recover Rare Earth Metals (2)

    May 10, 2021E-waste recycling is not the complete answer.Through e-waste recycling, once the service life expires, rare earth metals can be recovered from electronic products (such as mobile phones, laptop comput...view
  • Four Effective Methods of Separating Strong Square Magnet

    Four Effective Methods of Separating Strong Square Magnet

    December 30, 2020The biggest advantage of neodymium iron boron strong magnet is its super magnetism. Even relatively small rare earth magnets are difficult to separate. How to separate strong square magnets quickly an...view