Ferrite Magnet

Why Choose Us

Acro-Mag systems limited is a professional organization in manufacturing, sales and marketing Flexible Magnet and Magnet related products. Since established, we are improving our product range continuously, Our product line includes Flexible Magnetic Materials, Magnetic Printing and Display Materials, and Magnetic Finished products. We specialize in producing Ring Ferrite Magnet, Segment Ferrite Magnet, and other Ferrite Magnet.

Wide Range of Applications

Our products are widely used in Promotion, Advertising, Gifts and Souvenirs, Commercial Visual Display, Interior Display and Decoration, Office and Stationary, Hobby and Crafts, Children's Education etc.

Quality Guaranteed

Our company has obtained a series of certifications such as BA Free testing for Rubber magnetic strips _EN, EC23002507101(GZP23-000976)-CAN Final-ACROMAG, Rubber magnet with EN-71 TESTING_EN, etc.

One-Stop Solution

We supply not only flexible magnet product, but also provide product solutions based on your application and requirement.

Quick Response

Our commitment is to respond to your inquiries within 24 hours, ensuring that you receive the information and support you require in a timely manner.

Segment Ferrite Magnet
Segment Ferrite Magnet is the core functional component of a permanent magnet DC motor. It is mainly used in automobiles (such as starter motor, glass lifter, wiper, automatic seat, automatic...
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Ring Ferrite Magnet
In 2004, three production lines for Ring Ferrite Magnet were been put into production. After more than ten years' development and technical transformation, Acro-Mag has three sintering furnace...
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What is Ferrite Magnet

A ferrite is a ceramic material made by mixing and firing iron(III) oxide with one or more additional metallic elements, such as strontium, barium, manganese, nickel, and zinc. They are ferrimagnetic, meaning they are attracted by magnetic fields and can be magnetized to become permanent magnets. If you want to know the specifications and prices of Ferrite Magnet, please contact us!

Advantages of Using Ferrite Magnet for Packaging Closures?

Enhanced Aesthetics and Unboxing Experience

First impressions matter, especially in the retail industry. Customers will find your product more appealing because of the luxury and sophistication that magnetic packaging brings to it. The seamless and sleek design of magnet closures creates a memorable unboxing experience, which can leave a lasting impression on consumers. Word-of-mouth marketing and brand loyalty can be boosted by this element of surprise and delight.
Magnet packaging ideas come in a wide range of styles and finishes, allowing you to tailor the packaging to match your brand's identity. Whether it's a matte black magnetic box for a high-end cosmetic line or a vibrant, custom-printed magnetic pouch for a children's toy, the options are nearly limitless. This degree of personalization not only distinguishes your product but also strengthens brand recognition.

Secure and Reliable Closure

In addition to protecting the product inside, packaging has other functions as well. Magnets for packaging closures offer a secure and reliable sealing mechanism. Unlike traditional methods like adhesives or snaps, magnets do not weaken over time. They maintain their strength, ensuring that your product remains sealed and protected throughout its journey from the manufacturing facility to the customer's hands.
For fragile or liquid-containing products, reliability is especially important. Customers want to receive their purchases intact, and magnetic closures help guarantee that your products arrive in perfect condition, minimizing the risk of leaks or damage during transit.

Customization and Branding Opportunities

Custom magnetic packaging wholesale solutions are a creative playground for businesses. You can choose from a variety of shapes, sizes, and colors for your magnetic closures to align them with your brand's identity. Additionally, magnets can be easily customized with your logo or a special message, adding a personalized touch to your packaging. This degree of customization helps customers recognize your brand and distinguishes your product from those of your rivals.
For instance, if you sell artisan chocolates, you can opt for magnetic boxes featuring intricate designs and embossed logos that showcase the craftsmanship of your product. This attention to detail not only enhances the overall packaging aesthetics but also communicates the premium quality of your offerings.

Environmentally Friendly Packaging

Sustainability in packaging is important in today's world of environmental awareness. Magnetic closures are often reusable, making them an eco-friendly choice. Customers can repurpose the packaging for storage or other purposes, reducing waste and contributing to a more sustainable future. Highlighting your commitment to eco-friendliness can also attract environmentally conscious consumers.
By choosing magnetic packaging, you signal your dedication to minimizing your environmental footprint. This can resonate with consumers who value eco-friendly practices and encourage them to support your brand.

Easy Accessibility

Magnet packaging ideas are not only about aesthetics but also functionality. They provide easy accessibility to the product inside. Customers appreciate the convenience of magnetic closures, especially for products they use frequently. This user-friendly design can make your product more appealing compared to packages that require more effort to open and close.
Imagine a customer receiving a subscription box with a magnetic closure. The ease of opening and closing the box enhances the overall experience, ensuring that your product is associated with convenience and customer satisfaction.

Ideal for Shipping

Shipping magnets have become a game-changer for e-commerce businesses. When products are shipped, they often go through various handling processes and may encounter rough conditions. Magnetic packaging closures ensure that your product remains securely sealed during transit, reducing the risk of damage or spillage. This reliability can lead to fewer returns and increased customer satisfaction.
commerce has seen tremendous growth in recent years, and as more businesses enter the online marketplace, providing secure and reliable packaging for shipped products becomes paramount. Magnetic closures play a crucial role in ensuring that your products reach customers in the same pristine condition they left your warehouse.

Type of Ferrites Magnet

Soft Ferrites Magnet
Ferrites, which are used in electromagnetic or transformer cores, contain zinc, nickel, and/or manganese compounds. They contain a low coercivity and are known as soft ferrites. The low coercivity means the magnetization of the material can easily reverse direction without dissipating more energy (hysteresis losses), while the high resistivity of the material prevents eddy currents in the core, the other energy source loss. Due to their comparatively low losses at the higher frequencies, they can be extensively used in the RF transformers and inductor cores in applications like loopstick and switched mode power supplies antennas used in the AM radios.

Semi-hard Ferrites Magnet
Cobalt ferrite with the chemical formula CoFe2O4 (CoO·Fe2O3) is in between both soft and hard magnetic material and can be usually classified as a semi-hard material. It is majorly used for its magnetostrictive applications such as actuators and sensors, a good thing to its high saturation magnetostriction (at ~200 ppm). Also, the cobalt ferrite has the benefits of being rare-earth-free, which makes it a good substitute for the Terfenol-D.
Furthermore, its magnetostrictive properties may be tuned by inducing a magnetic uniaxial anisotropy. This may be done by the magnetic field-assisted compaction, magnetic annealing, or the reaction under uniaxial pressure. This last solution contains the advantage of being ultra-fast (just within 20 min), with the use of spark plasma sintering. Also, the induced magnetic anisotropy in the cobalt ferrite can be beneficial to enhance the magnetoelectric effect in the composite.

Hard Ferrites Magnet
In contrast, the permanent ferrite magnets are produced of hard ferrites that contain a high remanence and high coercivity after magnetization. Barium and iron oxide or strontium carbonate can be used in the manufacturing of hard ferrite magnets. High coercivity is defined as the materials are more resistant to becoming demagnetized, an important characteristic for a permanent magnet. Also, they hold a high magnetic permeability.
These particular so-called ceramic magnets are very cheap and widely used in the household products like refrigerator magnets. The maximum magnetic field strength H is up to 30 to 160 kiloampere turns per meter (400 to 2000 oersteds), and the magnetic field B is up to 0.35 tesla. At the same time, the density of ferrite magnets is up to 5 g/cm3.

Application of Ferrites Magnet

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.

Sensors
Such as Hall sensors, car position sensors, motor speed sensors, weighing sensors, security alarm sensors, magnetostrictive displacement sensors, car brake sensors, car wheel speed sensors, magnetron sensors, car speed sensors, water flow sensors, etc.

Water Pumps
Such as fish tank water pumps, circulating pumps, drainage pump rotors, energy-saving water pumps, submersible pumps, deep water pumps, etc.

How are Ferrite Magnets Made?

Calcination

The production of ferrite magnets begins with calcining a finely powdered mixture of iron oxide and strontium carbonate to produce a metallic-oxide material. In some grades, other chemicals such as cobalt and lanthanum are added to improve the magnetic performance. Once cooled, the already fine powder is then milled a number of times reducing the calcined material to fine small particles that each particle consists of one single magnetic domain.

Pressed

The powder is then pressed and compacted into a die and sintered. If the process of shaping and pressing takes place within an externally applied magnetic field the particles forming the magnet will be aligned and the magnet produced will be anisotropic. For this to be achieved the particles would first need to be mixed with water to form a slurry material.

Sintered

Once pressed, the compacted particles are then sintered at very high temperatures to make the particles fuse together and make one single magnet and then magnetised to saturation. Ferrite magnets are magnetised fairly easy and don't require a large external magnetising field.

Coating (Machining if needed first)

If the magnet requires machining then it will be machined using diamond coated machining tools and then coated or plated with the chosen coating.

Certifications

Frequently Asked Questions

Q: What are ferrite magnets used for?

A: They are used to make permanent magnets for applications such as refrigerator magnets, loudspeakers, and small electric motors. "Soft" ferrites have low coercivity, so they easily change their magnetization and act as conductors of magnetic fields.

Q: Which magnet is better ferrite or neodymium?

A: A rare earth or neodymium magnet is the most powerful of any permanent magnets and is around 2-7 times stronger than a regular or ferrite magnet. It can lift more than any other type of magnet of the same size.

Q: Are ferrite magnets safe?

A: Due to the force exerted by the magnets it is possible that chips may fly off at high speed into someone's eye, therefore we advise that when handling more than one ferrite magnet that you wear eye protection. Chips and broken magnets can also be quite sharp, so treat them as carefully as you would broken glass.

Q: What is the difference between ferrite and ceramic magnets?

A: The Ferrite permanent magnet is also known as a Ceramic Magnet and even as hard ferrite magnet. The name is interchangeable but they all refer to exactly the same material type. They are known as Ceramic Magnets because they are electrically insulating.

Q: Are ferrite magnets expensive?

A: Of course, ferrite magnets are much cheaper than Neodymium magnets, especially if considered as a unit of cost-per-volume of magnet. If an application does not require the higher magnetic flux of a Neodymium magnet, why pay for that? Many applications are perfect for ferrite magnets.

Q: Are ferrite magnets cheap?

A: Ferrite magnets are the cheapest magnets for simple applications. Compared to neodymium magnets, however, they are also significantly weaker. They withstand temperatures of up to 250 °C, are rust-resistant and therefore suitable for outdoor use.

Q: Are ferrite magnets strong?

A: Ferrite magnets, also known as ceramic magnets, provide the lowest magnetic field strength of all permanent magnetic materials with a maximum energy product range of 0.8-5.3 MGOe.

Q: How long do ferrite magnets last?

A: Ferrite magnets can last for several years if it is properly used and cared for. Since ferrite magnets are permanent magnets, they will only lose less than 10 percent of their magnetism every 100 years.

Q: Are ferrite magnets waterproof?

A: Ferrite magnets are superb in damp, wet or marine environments – Ferrite magnets are corrosion free. Because the iron is already in a stable oxidized form in its structure, the iron cannot oxidize ("rust") any further when in water.

Q: Are ferrite magnets permanent?

A: In conclusion, a ferrite magnet, also known as a ceramic magnet, is a type of permanent magnet that is made up mostly of a material called iron oxide.

Q: Are ferrite magnets weak?

A: Ferrite magnets are made up of a large mixture of iron oxide and various other chemical elements. Both of the categories that were mentioned above are extremely strong and durable, while still coming in weaker than neodymium magnets. These types of permanent magnets are very difficult to alter, while not impossible.

Q: Do ferrite magnets rust?

A: Ferrite magnets, also known as ceramic magnets, are made from iron-oxide and as a result they simply do not corrode even when submerged in water.

Q: Is ferrite a natural magnet?

A: The ferrite is a new type of non-metallic magnetic material developed in the 1940s. It is a metal oxide with ferrimagnetism. In terms of electrical characteristics, the resistivity of ferrite is much larger than that of a single metal or alloy magnetic materials, and it also has higher dielectric properties.

Q: What are ferrite magnets made of?

A: Ferrite Magnets (Ceramic Magnets) are produced by calcining (at between 1000 to 1350 degrees C) a mixture of iron oxide (Fe2O3) and strontium carbonate (SrCO3) or barium carbonate (BaCO3) to form a metallic oxide.

Q: Are ferrite magnets heat resistant?

A: Ferrite Magnets are strong and very resistant to high temperatures and corrosion. They don't easily demagnetize and can be used up to 250°C without any loss in performance.

Q: Are neodymium magnets illegal?

A: Unlicensed neodymium magnets may be cheaper than licensed magnets, but purchasing unlicensed magnets is illegal and can result in lawsuits from the patent holders.

Q: What is the color of a ferrite magnet?

A: The Ferrite magnets (Ceramic magnets) have a characteristic "pencil lead" colour (i.e. a dark grey colour). They are ferrimagnetic in magnetic performance (good magnetic field and power but, size for size, not as powerful as NdFeB or SmCo).

We're professional ferrite magnet manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy or wholesale ferrite magnet for sale here from our factory.

Segment Ferrite Magnet, Ring Ferrite Magnet, Ferrite Magnet