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The use fixed number of year of ndfeb strong magnet is how long? _ ndfeb strong magnet manufacturers

by:Newland     2020-04-02
What is the use fixed number of year ndfeb magnet? Ndfeb magnet is a permanent magnet, that is to say, in the case of external magnetic field to evacuate, still keep its magnetic properties. There are two main influence the magnetic. First: environmental ndfeb magnets containing rare earth metal neodymium, its easy to oxidation. So need to electroplating processing of magnets, depending on the use environment for plating. The best plating nickel, copper and nickel, is three layer coating: nickel - Copper - Nickel. The coating of 5 - respectively 5 - 5 microns. Particularly bad environment can upset the coating, and salt spray test. Can do 24 - respectively 48 - 72 hours salt spray test. The second: working temperature in the table below for the thermal characteristics of ndfeb magnet corresponding brand have corresponding working temperature. NM brand of ndfeb, for example, its working temperature at 100 ℃, within more than working temperature it will begin to demagnetization, Curie temperature when its working temperature reaches 340 ℃, the magnetic will be completely lost. To sum up, in the environment and the temperature of ndfeb magnet, the stability of the situation, the magnetism is permanent.
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