Common Applications of Ferrite Magnets
Permanent Ferrite magnets, also known as ceramic magnets, are commonly used in many applications where more powerful rare-earth magnets like neodymium magnets are not required. Or, where their resistance to demagnetisation, corrosion and ability to operate at high temperatures is required. Common applications include:
Fridge magnets and novelty items
Ferrite magnets are most commonly none as the fridge or hobby magnet, this is because they tend to be cheaper than its magnet family but are still reasonably strong. We also provide adhesive ferrite magnets that are great for making homemade fridge magnets.
Loudspeakers
At the front of a loudspeaker, there is a fabric or lightweight metal cone. The outer part of the cone is fixed into the outer part of the loudspeaker. The inner part is fixed to an iron coil that sits just in front of a permanent magnet. When you hook up the loudspeaker to a stereo, electrical signals feed through the speaker cables into the coil. This turns the coil into a temporary magnet. As the electrical current flows back and forth in the cables, the magnet either attracts or repels the permanent magnet. This moves the coil back and forward, pulling and pushing the loudspeaker cone, allowing the speaker to pump out sound into the air.
Pot magnets
Pot magnets are designed for clamping directly onto a steel surface; they are made from a large magnet encased within a steel shell. They are magnetic on one face only, creating a solid clamping force. However, they should not be used to attract other magnets or attract through a gap as they have a shallow depth of magnetic field. Pot magnets have many advantages and can be supplied with a tapped hole, a countersunk hole, a counter-bored hole, a threaded stud or a threaded collar all for convenient mounting. They can also be supplied with hooks and eyebolt attachments, ideal for hanging a variety of items.
Very large plate magnets to remove ferrous contamination from processing lines
During the production process metal parts can enter food products. Large ferrite plates can be used within the production line to help the prevention of metal contamination in the food industry.
Motors, generators and alternators
Ferrite magnets are embedded into the rotors used in motors. The magnet is attracted to or is wrapped in coil within the motor assembly. When the motor is turned on the coil turns into a temporary magnet, this is what causes the motor to rotate. When the source of electrical power is removed, the wire loses its magnetic qualities and the motor stops.
Lifting magnets
Limpet magnets are an assembly of magnets designed to give a superior hold against uneven and dirty surfaces. They are ideal for semi-permanent attachments where you are likely to leave the magnet in place for the foreseeable future. Common applications include attaching headboards to walls, holding doors open, gate fixtures and hanging pictures. Our ferrite limpet pot magnets come with a mild steel shell. This combination of materials gives the magnetic assembly a strong resistance to corrosion, and they have a maximum operating temperature of 180 degrees Celsius, making them ideal for outdoor applications. These magnets come with a safe-handling warning; because they are so powerful they can be dangerous if not handled carefully.
Sea searcher magnets
Sea-Searcher recovery magnet are used to retrieve tools dropped overboard. These devices are used by Police, Navies and Rescue Forces worldwide. Ferrite magnets are used in these devices due to there resistance to corrosion.
Clamps
Ferrite clamps are typically used to improve the performance of sound systems, such as microphones. Ferrite clamps usually in two and is clamped around a conducting wire. Ferrite is a highly permeable material, which makes them effectively absorb some of the noise in the wire.
Switches and relays
Ferrite switches have a wide variety of uses in commercial, military and low and high power applications. These include low noise amplifier redundancy switches, high power isolators and switch matrices. Ferrite switches are suitable for these applications as they are highly reliable and have a high resistance to demagnetisation.
Sweeper magnets
Our handheld magnetic sweeper provides a convenient, durable and effective operation of sweeping smaller areas to attract ferrous items like nails, screws, metal shards and building debris. Once the sweeper has attracted the unwanted debris, simply wipe away.
Other applications include medical instruments, brakes, eddy current devices, security systems, the list could go on! If your application requires a magnet that is resistant to heat, demagnetisation, corrosion and is cost effective, you should definitely consider using Ferrite magnets. If you’ve used our Ferrite in your applications, we would love to hear from you! Please send any information and images to marketing@magnetexpert.com to have your own featured application!
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