In the recent work, we met a lot of customers asking whether the magnet will demagnetize? What is the long life of a magnet? When does a magnet demagnetize? And so on a series of such problems, the following is to introduce the three factors affecting magnetic force:
How long is the service life of the magnet? A permanent magnet has an infinite life, while a coil magnet has an infinite life only when it is energized.
First, because there are dozens of magnets and dozens of materials, different magnets have their own temperature limits. In general, if the temperature of the product during use is below the temperature limit of the magnet, there will be no demagnetization.
Second, the existence of alternating magnetic fields.People who have a certain understanding of magnets know that magnets can be divided into N, S or multiple poles.If there is an additional magnetic field in the vicinity of the magnet being applied, this will counteract part of the magnetic force of the magnet.This is also what people call demagnetization within the range of the temperature used.
Three, mechanical vibration. This has a certain connection with the assembly, the magnet in the assembly process will produce friction on the product. Because the material properties of the magnet are fragile, leading to wear and tear of the body, the size becomes smaller, and the magnetism will gradually become weaker.
So in the selection of magnets and product design, please consider the above three points in them. In addition, we sincerely provide you with high quality bonded NdFeB magnets, bonded NdFeB magnetic tiles, bonded NdFeB special-shaped products and other series of products.
