Permanent Magnets
Our permanent magnets are manufactured – depending on the requirements – from ceramic or metallic material, and we also offer some as plastic-bonded variants. They all have different properties and are used in a wide variety of applications.
Our range includes a large selection of permanent magnets in a wide variety of designs. As the manufacturer, we can also offer you products that are custom made according to your unique requirements.
Main areas of application include:
- Sensor technology
- Engine manufacturing
- Filter technology
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What are permanent magnets?
A permanent magnet is made of hard magnetic material, for example iron, cobalt, nickel or certain ferrite alloys. Its magnetic field always remains the same.
Permanent magnets can be made of different materials and therefore have different properties.
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What is the service life of permanent magnets?
Even when demagnetized, it retains its original properties. Consequently, when it is exposed to a strong magnetic field again, it will restore its order.
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What influence do cold and heat have?
Different temperatures can affect the attraction of a permanent magnet: if a magnet is heated, its magnetic field decreases. If the same magnet is exposed to cold, its magnetic properties improve.
The resistance to demagnetization may also change depending on the temperature. It usually decreases at high temperatures and increases at low temperatures. Ceramic (ferrite) magnets are the exception: in this case it is the other way round.
Neodymium magnets have the best stability of resistance. This is followed by samarium-cobalt, hard ferrite and finally ceramic magnets. Hard ferrite magnets have the highest resistance to demagnetization, but they undergo the greatest variation with temperature changes. AlNiCo magnets have the lowest resistance to demagnetization, but are the least susceptible to temperature fluctuations. AlNiCo magnets also have the highest operating temperature, followed by samarium-cobalt, ceramic and finally hard ferrite magnets.
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Where are permanent magnets used?
Permanent magnets are versatile and can be used in a wide range of applications. They are found in automotive and engine technology, sensor technology, warehouse logistics, automation, mechanical engineering, the furniture industry and many other industries.
