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The twelfth process of magnet production: magnetization

Magnet magnetization, as the name implies, magnetizes a magnetic substance or increases the magnetic properties of a magnet with insufficient magnetic properties. Generally, the magnetic object to be magnetized is placed in a strong magnetic field formed by a coil through which direct current is passed, and the magnetic field in the magnet is catalyzed by an external magnetic field.


There are currently two types of magnetizers, constant current magnetizers and pulse magnetizers.

A. The working principle of the constant current magnetizer: a constant current DC is generated in the coil to make the coil generate a constant magnetic field. Suitable for magnetization of low coercivity permanent magnet materials, such as ferrite, low coercivity NdFeB.

11选5一注是多少钱B. The working principle of the pulse magnetizer: through the instantaneous large pulse current in the coil, the coil produces a short super strong magnetic field. Suitable for high coercivity permanent magnet materials or complex multi-pole magnetization. It is widely used in the production and application of permanent magnet materials. It is suitable for the magnetization of various permanent magnet material parts and components, such as: aluminum nickel cobalt series, ferrite series, rare earth permanent magnet series, etc., with high efficiency and reliability. The equipment has no special requirements for the power supply configuration of the work site, and it is convenient and flexible to use.


      In particular, pulse magnetization is to first charge a capacitor with a DC high voltage and then discharge it through a coil with a very small resistance. The peak value of the discharge pulse current can reach tens of thousands of amperes. This current pulse creates a strong magnetic field within the coil that permanently magnetizes the hard magnetic material placed in the coil. When the magnetizer capacitor is working, the peak value of the pulse current is extremely high, and the performance of the capacitor to withstand the inrush current is very high. The structure of the magnetizer is relatively simple. It is actually an electromagnet with extremely strong magnetic force. It is equipped with iron pieces of various shapes as additional magnetic poles to form a closed magnetic circuit with the magnet to be charged. When magnetizing, additional magnetic poles are arranged, and The magnet is charged and can be completed in an instant as long as the excitation current is applied.

11选5一注是多少钱The direction of magnetization of a circular or ring magnet includes axial, radial, multi-stage, and radiant magnetization.

11选5一注是多少钱The NS poles of the square magnets appear in pairs on the corresponding two faces of the six faces.


11选5一注是多少钱After the magnet is magnetized, it can be packaged and shipped.

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