Sintered ndfeb magnets is the highest temperature can be used?
Magnet highest use temperature is determined by the magnetism of the sintered ndfeb magnet and the selection of working point.
Sintered ndfeb magnets are working point can be said with the permeability coefficient of sintered ndfeb magnet.
For the same sintered ndfeb magnets, magnetic circuit of the higher the permeability coefficient (
The more the magnetic circuit closed)
, the highest use temperature of the magnet is high, the performance of the magnet is stable.
So the highest use temperature of the magnet is not a definite value, but changes with the close degree of magnetic circuit.
Under the premise of sintered ndfeb magnets in a given working point, the brand of the highest temperature is as follows: brand NMHSHUHEH highest working temperature 80100120150180200 ℃, if the actual working temperature is close to the highest temperature, and there was a significant demagnetization of sintered ndfeb magnet, at this point either must improve magnetic circuit, in order to improve the permeability of magnetic circuit;
Must choose either higher grades the performance of the class, so as to guarantee the normal work of the magnet.