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PRODUCTS

Wide range of ferrite magnets with different working temperatures and very different geometric shapes such as blocks, discs or rings, according to need.

CHARACTERISTICS

Type of material

Ceramic

Composition

Iron oxide
Barium Ferrite or Strontium

Work temperature

From -40ºC to 250ºC

Advantages

Economic magnets
Great resistance to corrosion
Outdoor application

We can check the characteristics of the ferrite magnets in the following table of qualities. It indicates the remanence of the magnets, the coercive force, the working temperatures and the minimum and maximumresistance.

CONSULT QUALITY TABLE

IMAGradoNomenclatura RemanenciaFuerza CoercitividadCoercitividad IntrínsicaEnergía Máxima ProductoTemperatura de Trabajo
ImamagnetsGradeNomenclature RemanenceCoercive force Intrinsic coerciveMaxium energy productWorking temp
Ferrite MagnetsGradeNomenclature BrFuerza bHcFuerza Ihc (BH) maxWorking temp
Ferrite MagnetsGradeNomenclature Br max (T) Br min (T) HcB min (kA/m) HcB max (kA/m) HcJ min (kA/m) HcJ max (kA/m) BHmax min (kJ/m³) BHmax max (kJ/m³) Max. Temp. trabajo: (ºC)
HF 7/21 isotropic Y10THF 7/210,20 0,22 125145 2102506,5 8,0 250
HF 26/20 anistropicY30HF 26/200,380,39 191210 199 220 26,028,0 250
HF 27/23 anistropicY30BHHF 27/230,38 0,39223 235231245 27,0 30,0 250

Advantage

Ferrite magnets are the cheapest in the market. Its visual appearance is of a metallic oxide of dark gray color. They have a great resistance to corrosion and therefore, they are one of the most appropriate products for different outdoor applications thanks to being stainless. They can also be exposed to temperatures of up to 250ºC. They are probably the best alternative to neodymium magnets, as they not only resist humidity and corrosion, but are also resistant to different types of chemicals.

Work temperature

The working temperature is a factor to be taken into account in the different uses that will be given to the magnet. In IMA we offer our customers a wide range of magnets that cover temperatures from -40ºC to 250ºC.

Applications

magnets are not as strong as neodymium magnets, but their resistance to corrosion and a wider temperature range offer a large number of applications for our customers.

Lifting Magnets
Brakes
Hard Drives
Speakers
Headphones
ABS System
Sensors
Alternator
Magnetic shock absorbers

Production process

Ferrite magnets need to follow a series of steps in order to ensure quality, that is why we will explain them in detail below:

  1. The first step in obtaining the ceramic magnet is the production of the ferrite. This material is achieved through the fusion of various metal oxides which are subjected to high temperatures.
  2. To continue with the production of this permanent magnet, we pass the obtained fusion to grind it until obtaining very small particles (each particle will have an independent magnetic domain).
  3. Then the powder obtained by the previous step is pressed into a certain shape.
  4. Finally, the ferrite undergoes sintering. This process is characteristic for its oxygen shortage and for the presence of separators. These spacers are of great importance as they will influence the final result, more specifically the magnetic properties.
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