The most effective solution for high temperature demagnetization of NdFeB powerful magnets

    NdFeB magnet is currently recognized in the magnetic materials industry, high-performance and cost-effective magnet products, many high-tech fields are designated to use it to make all kinds of spare parts, such as national defense and military, electronic science and technology, medical equipment, electrical motors and electrical appliances electronic appliances and other fields are involved. The more you use the more likely to find problems, including neodymium-iron-boron powerful magnets in a high-temperature environment demagnetization phenomenon of most concern.

    First of all, we need to know why NdFeB demagnetization in high temperature environment?

    Epoxy plated shaped magnet

    The reason why NdFeB demagnetizes in a high temperature environment is determined by its own physical structure. Generally magnets can produce magnetic field because the electrons carried by the substance itself rotate around the atoms according to a certain direction, thus generating a certain magnetic force, which in turn affects the related matters in the surrounding. But the electrons around the atom in accordance with the established direction of rotation is also a certain temperature conditions, different magnetic materials can withstand the temperature is also different, in the case of too high temperature, the electrons will deviate from the original track, resulting in confusion, which is when the magnetic material of the local magnetic field will be disrupted, thus appearing demagnetization phenomenon.

    The temperature resistance of NdFeB magnets is about 200 degrees, that is, more than two hundred degrees, then the demagnetization phenomenon will occur, if the temperature is higher, the demagnetization phenomenon is more serious.

    The most effective solution for high temperature demagnetization of NdFeB magnet

    First, do not put the NdFeB magnet products into too high a temperature, especially to pay attention to its critical temperature, that is, two hundred degrees, adjust the temperature of its working environment at the right time, can minimize the occurrence of demagnetization phenomenon.

    Second, it is from the technology to improve the performance of products using neodymium iron boron magnets, so that it can have more temperature structure, not easily affected by the environment.

    Third, you can also choose the same magnetic energy product of high coercivity materials. If you can't, you can only sacrifice a little bit of magnetic energy product, and look for the higher coercivity material with lower magnetic energy product, and then you can choose to use samarium cobalt, as for reversible demagnetization, you can only choose samarium cobalt.

    Guess you are also concerned about:

    How to reduce or prevent the oxidation of NdFeB thermal demagnetization, resulting in a decrease in coercivity?

    A: This is the problem of thermal demagnetization, it is really more difficult to control, demagnetization, pay attention to the temperature, time, vacuum control.

    How much frequency will NdFeB magnet be demagnetized?

    Permanent magnets will not be demagnetized because of the frequency of vibration, high-speed motor speed to 60,000 rpm will not be demagnetized.