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Ferrite Magnets Magnetic Material
Sep 23, 2017

Ferrite Magnets Magnetic material

Ferrite is one of the main magnetic materials produced by the permanent magnet material factory. It contains a lot of metal materials such as neodymium and iron, and it is easy to rust. Therefore, it is necessary to carry out the surface coating treatment of the permanent magnets. One of the best solutions.

Ferrite passivator for ferrite material, cast iron and powder metallurgy and other materials directly passivation of the surface, is a light yellow transparent liquid, specifically for the ferrite material of the magnetic material development Of the new efficient and environmentally friendly passivation indicator in line with RoHS directive, its pharmaceutical has a special buffer system, to overcome the workpiece surface and internal corrosion, passivation efficiency and stability.

The ferrite permanent magnet material is a permanent magnet material based on the intermetallic compound RE2FE14B. Ferrite has a very high energy product and the force, while the advantages of high energy density ferrite permanent magnet materials in modern industrial and electronic technology has been widely used, so that instrumentation, electro-acoustic motor, magnetic magnetization It is possible to miniaturize, reduce, and reduce the size of the apparatus.

The advantages of ferrite are cost-effective and good mechanical properties; the disadvantage is that the Curie temperature is low, the temperature characteristics are poor, and easy to corrode corrosion, must be adjusted by its chemical composition and surface treatment methods to be improved , In order to achieve the practical application requirements.

Sintered ferrite permanent magnetic materials are used in the powder metallurgy process, after melting the alloy made of powder and in the magnetic field pressed into the embryo, the embryo in the inert gas or vacuum sintering to achieve densification, in order to improve the magnet coercivity , Usually requires an aging heat treatment. Magnets use precautions and instructions

1, NdFeB magnetic is very strong, the operation should avoid the hands or other parts of the body by the magnet clamping, for the larger size of the magnet should pay more attention to personal safety and protection.

2, do not close the electronic medical equipment or carry a pacemaker and other medical equipment.

3, do not swallow the magnet. If you swallow inadvertently, please go to hospital immediately. Do not place the magnet in a place where children can reach it.

4, the use of the magnet in the process should ensure that the workplace clean, so that iron and other small impurities adsorbed on the surface of the magnet affect the normal use of the product.

5, NdFeB magnets are very strong, such as its strong impact, the magnet will be broken and scattered, magnetic debris may fly into the eyes, please be careful to use.

6, NdFeB magnets suitable for storage in the ventilated and dry room, acidic, alkaline, organic solvents, water, high temperature and humidity environment easy to make the magnet rust, coating off the magnet powder demagnetization. For the unplasticized products should pay attention to, storage can be appropriate oil rust, which is our proposed NdFeB magnet surface corrosion treatment of the main reasons.

7, after heating, the magnetic properties of NdFeB magnets will be greatly reduced. Please refer to the catalog or the relevant temperature characteristics of the pointer, pay attention to the assembly or use of the magnet when the temperature should not be too high.

8, in the use or storage of magnets, please avoid containing corrosive gases, high conductivity environment (such as electrolyte containing water, etc.), acidic environment, organic solvents. Otherwise it will cause the magnet corrosion and magnetic properties and mechanical strength weakened. For heat resistance and other conditions, please refer to the catalog or other data. Please consult with the company.

9, magnets hard and brittle, so in the vibration, shock and other occasions, there may be broken, shedding and so on. If used with such use, please pay attention to the design, even if the magnet is not broken off.

10, up to high-speed operation body, so the magnet and other objects may be broken. In the design, please take the necessary anti-fist, if the magnet broken, debris will not fly out.

11, magnetic yoke, electrode sheet and other bonding, please fully confirm the type of adhesive, dosage, conditions of use, strength and reliability.


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