As we all know, neodymium magnet .made up of Neodymium, Iron and Boron, has the strongest magnetic.but the magnetic will turn weaken or disappear of the strength during use. Some customer will confuse, what happens? There are some reasons as following to conduct the magnet demagnetization,
1, injection.some magnet will use in inject the product. When the grade is N series, the max. The temperature needs less than 80 ℃, when injects magnet into plastic,the working temperature will over 120℃, although just 2-3 seconds, still will result in the demagnetization of the magnetic can’t reach your request.
2Hot pressing.when the magnet used in hot press, the temperature will up to 150℃,if the neodymium magnet max. Temperature is less than 150 ℃ ,the magnetic also demagnetization.
3, Bake.if put the magnet on the oven, the magnetic will demagnetization.
4,Material ,neodymium magnet make up of nd,B,Dy,Al,Nb,Fe,Sn,the composition percentage decide on the magnetic.some customer offers the target price too lower if the factory wants to get the order,they need to meet the target price.so the row material will mix other material.some magnet will demagnetization when use 2 -6 months later.so we suggest customers can’t judge price as the first .you need to choose the material is steady.
5, Transportation. When transportation didn’t care, and the packaging not good. magnet will impact each other.that results the magnet demagnetization. So the package is importance when shipping.we suggest the magnetic separation pack.
6, Environment. When the magnetic use in the magnetic environments,such as magnetized,the magnetic will disappear or the pole change.
We conclusion the results,there is high temperature demagnetization,material magnet demagnetization,high-frequency impact made demagnetization,high magnetic environment. So, if you want the magnetic as always, please avoid the situation as working temperature over the max temperature, used the suitable composition percentage material, good package avoid impact.
