Strong magnets demagnetize at low temperatures

- Nov 22, 2017 -

Strong magnet encountered high temperature or temperature exceeds the use of temperature will appear demagnetization, then if the strong magnet in the face of low temperature environment, it will appear demagnetization it? We know that NdFeB powerful magnet temperature is 230 degrees, the conventional temperature of 80 degrees, when the temperature close to or exceed the range of NdFeB powerful magnets, there will be degaussing, the longer the magnet magnetic force will be the more More, a certain time to reach the magnets will be completely degaussing.

       The maximum temperature of ferrite magnets can be close to 500 degrees, but the ferrite magnets are not resistant to such a low temperature environment, the authoritative test results, the ferrite magnets to achieve low temperature 40 degrees around began demagnetization, such an environment , There are more chances in the north, so the use of ferrite magnets in some outdoor supplies is relatively small, while the strong neodymium iron boron magnets are relatively stable, timely 40 degrees in the low temperature magnetic flux rate or Relatively stable, so when used in the outdoor products in the north most of the NdFeB powerful magnets, such as communication antenna, automatic sensing fence, monitoring cameras and so on.


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