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Magnetic tile, magnet type and basic knowledge and Application

First, the types of magnets are a lot, generally divided into two categories of permanent magnet and soft magnetic, permanent magnet is divided into two major categories:

The first category is: metal alloy magnets include NdFeB magnet, SmCo magnet, alnico magnet.

Second categories are: ferrite permanent magnet material

1 ferrite magnets: ferrite major raw materials including BaFe12O19 and SrFe12O19. Made by the ceramic technology, the texture is relatively hard, is a brittle material, due to ferrite magnets have good temperature resistance, low price, moderate performance, has become the most widely used permanent magnet.

2. Neodymium iron boron magnet. Neodymium iron boron is currently found in the commercialization of the highest performance magnet, known as the king of the magnetic with high magnetic properties the maximum energy product (BHmax) higher than ferrite (ferrite) more than 10 times. The mechanical processing performance is also very good. Operating temperature up to 200 degrees celsius. And its hard texture, stable performance, there is a very good price, so its application is extremely wide. But because of its strong chemical activity, so it must be on the surface of coating processing. (such as Zn, Ni, electrophoresis, passivation, etc.).

3 (SmCo) of SmCo magnets according to different components of SmCo5 and Sm2Co17. Because the material is expensive and SmCo limit the development. Samarium cobalt magnet, SmCo as rare earth permanent magnet, not only has the high magnetic energy product (14-28MGOe), reliable straightening coercive force and good temperature characteristics. Compared with the Nd-Fe-B magnet, SmCo magnets are more suitable for working in high temperature environment.

4 aluminum nickel cobalt magnet: aluminum nickel cobalt is a kind of alloy consisting of aluminum, nickel, cobalt, iron and other trace metal elements. The casting process can be processed into different sizes and shapes, which can be processed very well. Cast aluminum nickel cobalt permanent magnet has the lowest reversible temperature coefficient, the operating temperature can be as high as 600 degrees celsius. Aluminum nickel cobalt permanent magnet products are widely used in various instruments and meters and other applications.

Two, the size of the magnetic force: NdFeB magnet, SmCo magnet, alnico magnet, ferrite magnet.

Neodymium iron boron magnet

Characteristics: Nd Fe B permanent magnetic material is a permanent magnetic material based on Nd2Fe14B intermetallic compound. Neodymium iron boron with high magnetic energy product and coercive force, at the same time, the advantages of high energy density of the neodymium iron boron permanent magnetic material in modern industry and electronic technology was widely used, so that the instrument, electro acoustic electric, magnetic, such as magnetic equipment miniaturization, lightweight, thin as possible.

Characteristics: Material: the advantages of neodymium iron boron is high price, with good mechanical properties; deficiency lies in the low Curie temperature, temperature characteristics, and easy to corrosion powder must be by adjusting the chemical composition and adopt the surface processing method which can be improved, in order to achieve the requirements of the actual application.

Manufacturing process: the production of neodymium iron boron powder metallurgy process.

Process: raw materials, mixing, smelting, ingot, milling, pressing, sintering and tempering, magnetic testing, milling, milling, finishing, electroplating, and finished products.

ferrite magnet

Ferrite magnet features: its main raw materials include BaFe12O19 and SrFe12O19. Made by the ceramic technology, the texture is relatively hard, is a brittle material, due to ferrite magnets have good temperature resistance, low price, moderate performance, has become the most widely used permanent magnet.

Characteristics of ferrite magnets: high magnetic energy, good time stability and low temperature coefficient.

Ferrite magnet applications: widely used in electric meters, instruments, motors, automatic control, microwave devices, radar and medical equipment, etc..

Ferrite magnet magnetization direction: axial and radial magnetization or as required.

Ferrite magnet shape can produce cylindrical, annular, rectangular, flat, tile, axe.

alnico

Aluminum nickel cobalt magnet features: the aluminum, nickel, cobalt, iron and other trace metal elements constitute a kind of alloy. The casting process can be processed into different sizes and shapes, which can be processed very well. Cast aluminum nickel cobalt permanent magnet has the lowest reversible temperature coefficient, the operating temperature can be as high as 600 degrees celsius. Aluminum nickel cobalt permanent magnet products are widely used in various instruments and meters and other applications.

Classification of aluminum nickel cobalt magnets: can be divided into two categories: cast aluminum nickel cobalt and sintered aluminum nickel cobalt.

Aluminum nickel cobalt application places: casting aluminum nickel and cobalt products are mainly used in automotive parts, instruments, electro acoustic, electrical, teaching and aerospace military field, with a temperature coefficient of low resistance to high temperature, moisture resistance, is not easy to be oxidized and the working stability of the good. Sintered aluminum nickel and cobalt by powder metallurgy method for the production and become, suitable for producing the shape of complex, light, thin, small products, widely used in instrumentation, communications, magnetic switch and a variety of sensors.

Alnico magnet shape can produce cylindrical and circular, rectangular, flat, tile, horseshoe.

SmCo magnets

Also known as alnico and SmCo magnet SmCo permanent magnet, SmCo permanent magnet, SmCo magnet, rare earth permanent magnetic strong etc.. Is by samarium cobalt and other metal rare earth materials proportioning, dissolving tempered alloy, the crushing, pressing, sintering of a magnetic material with high magnetic energy product, very low temperature coefficient, the maximum working temperature of up to 350 DEG C, negative temperature is not restricted, the working temperature of 180 DEG C, the maximum energy product and temperature stability and chemical stability were in excess of neodymium iron boron permanent magnetic material. With strong anti corrosion and anti oxidation properties.


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