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Do you know the powerful magnet demagnetization method?

by:Newland     2020-05-01
Powerful magnet, is refers to the ndfeb magnet. It compared with the ferrite magnets, alnico, samarium cobalt magnetism can greatly over several other magnets, ndfeb magnets can adsorb itself, 640 times the weight of the weight, so the ndfeb by outsiders often referred to as a powerful magnet. Powerful magnet magnetization and demagnetization can be, because the magnet itself is or will bring some magnetic, so we can according to the use of powerful magnets is different to make certain methods for demagnetization method. Vibration ndfeb magnet demagnetization method: this method is simple operation is a powerful magnet for strong intense shaking, again after the operation of the vibration of magnet inner structure has changed, and transform the physical of the magnet is generally adopt this way the demagnetization method the effect is not big, only a small amount of demagnetization can temporary use. High temperature demagnetization method: high temperature demagnetization method mainly is put into operation in the high temperature furnace for heating, after high temperature treatment will be powerful magnet magnetic eliminate, but in the process of heating for the effect of high temperature will directly result in magnets inside the change of the structure of the object changes, so the demagnetization method generally used for magnet for scrap and recycling. Demagnetization magnetic communication: the demagnetization method is to put the magnet in space can produce alternating magnetic field. Alternating magnetic field interference, the magnet structure interference, so as to achieve the demagnetization effect. This method is a commonly used method of demagnetization. The above three methods of ndfeb magnet demagnetization is effective, but in general, we tend to adopt ac demagnetization method, rather than high temperature demagnetization method and vibration demagnetization method, demagnetization effect is good, high efficiency, is the most effective method of demagnetization. At present the method used in the industrial production.
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