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Bonded Neodymium Magnet

Everbeen Magnet:Your Professional Bonded Neodymium Magnet Manufacturer!

Everbeen Magnet specializes in the development and processing of various permanent magnet materials such as NdFeB,Ferrite magnets and accessories, electronic components, and magnetic application devices. Our production base is located in the suburbs of Ningbo, Zhejiang Province. It covers a total area of 20,000 square meters, more than 100 employees, and a monthly production capacity of 600 tons of various types of NdFeB(neodymium) magnets. Products are widely used in many fields such as motors and electrical appliances, instruments, speakers, sensors, and office automation equipment.

Why Choose Us

01/

Expertise and Experience
20+ years of experience in the magnet industry, all our sales have 12+ years expertise and knowledge in various types of permanent magnets.

02/

Customization
Most of permanent magnets are customized according to drawing and requests.Be flexible in accommodating customer needs, whether it involves order adjustments, additional information, or other special requests.

03/

Diverse Product Range
Besides Neodymium magnet, we also provide Alnico magnet, Samarium Cobalt (SmCo) magnet, Ferrite(ceramic) magnet, Flexible magnet(Rubber magnet) and Magnetic Products.

04/

Quality Assurance
All magnets are under our strict quality control. We assure you what we offer is superior and quality products. From the beginning of the production to the inspection of finished goods, we pay attention to every detail and try our best to avoid any mistakes carefully.

05/

Effective Communication
Provide responsive and effective communication during the purchasing process, addressing any inquiries promptly and offering support to ensure a smooth transaction.

06/

Timely Delivery
15-30 days according to magnet order information.We promise timely delivery to ensure you receive the goods on time.

Magnetic characteristic of Bonded Neodymium Magnet

Advantages of Bonded Neodymium Magnet

Strong magnetic properties
Bonded neodymium magnets have a high magnetic energy product, which means they can produce a strong magnetic field that rivals that of sintered NdFeB magnets. This makes them ideal for applications that require high magnetic performance, such as motors, sensors, and magnetic couplings.

Mechanical stability
Bonded neodymium magnets are mechanically bonded with polymer resins, which provides excellent adhesion and protection against corrosion and demagnetization. This makes them more durable and resistant to wear and tear than sintered NdFeB magnets, which can crack or chip under high stress or impact.

Design flexibility
Bonded neodymium magnets can be formed into complex shapes and sizes using injection molding or compression bonding techniques. This allows for greater design freedom and customization of the magnetic properties to suit specific application requirements. Moreover, bonded NdFeB magnets can be magnetized in any direction, which enables more efficient use of the magnetic field and reduces the need for additional magnetization operations.

Integration with Supporting Components
The process of compression molding or injection molding used in the production of bonded neodymium magnets allows for the seamless integration of these magnets with other supporting components. This one-step formation process not only streamlines manufacturing but also enhances the structural integrity of the final product.

Process of Bonded Neodymium Magnet

Bonded neodymium magnets are rare earth magnets made from NdFeB magnetic powder and a binder. The powder is prepared by grinding the NdFeB alloy into a powder and combining it with a polymer. Bonded magnets are not only extremely useful as finished magnets, they are also used as components in many other products. Bonded magnets may be made by injection molding, extrusion, calendering, or compression bonding.

Injection molding
With injection molding, a melted thermoplastic compound is injected into a mold. There, it cools and solidifies into the right shape. For neodymium magnets, NdFeB is used as the magnetic powder in this mixture. Magnets can be shaped and formed by this process, which works well with assembles and over molding manufacturing techniques.

Extrusion process
The extrusion process pushes the mixture through a heated barrel with a large screw. The mixture is pressed through a heated die, and that material is cut to the right length.

Calendering process
Calendering is a way to make continuous magnet sheets. This is often used for flexible magnets. A powdered compound of iron powder and elastomer is pushed through a set of hot rollers. These rollers stretch and smooth the strip, creating a uniform sheet.

Pressure welding process
In compression bonding, NdFeB is processed through a powder refinement process, blended with a plastic material and compression molded. Compression bonded neodymium magnets can be magnetized in any direction and with multiple poles. They are typically used in small motors, mobile phones, electronics, automobiles, etc. Other applications include brushless motors, speakers, buzzers and toys etc.

Safety Notes for the Use and Storage of Bonded Neodymium Magnet

• Do not place magnets near a person wearing electrical medical equipment.such as a pacemaker, because the magnet may result in a malfunction of the equipment and endanger a person’s life.

• Keep magnets away from magnetic memory media or other magnetic field sensitive devices such as magnetic cards. tapes, floppy disks, hard disk drivers, and watches. Otherwise, information stored in the media or the devices may be damaged.

• Big block of the magnet will strongly attract each other or attract iron steel pieces, which may cause serious injuries to a person.

• Relatively weak in strength, bonded magnets may break into pieces when colliding with other materials. Be careful in assembling magnets and prevent the fine fragments from entering into eyes or cause other injuries.

• Keep magnets in good condition and avoid following environment in case that magnets become rust or weaken in mechanical or magnetic strength.
1.With acid, alkali, organic solvent, or electrolytes.
2.Immersed in water or in oil.
3.Space filled with hydrogen.
4.Space filled with corrosive gases such as Cl2, NH3, Nox, etc.
5.With radioactive rays.

Packaging and Shipping

Professional Export Package:

Shipment method: By sea. Customized wooden case By air, Professional magnetic isolation packaging Cartons packages are for air shipment, and we will hold cartons with one case or pallets for sea shipment.

Our Certificates

FAQ

Q: What information do i need to offer when I have an enquiry?

A: If have any enquiry, please kindly advise the following information: Magnet grade or magnetic properties, size, shape and drawing with tolerances, Magnetic direction, quantity, Surface coating etc.

Q: How long is your delivery time?

A: For stock products, we will send goods to you within 1-2 days after receiving the payment. If we do not have them in stock, generally speaking, production time is 15-20days.

Q: Can you provide samples? Is it free or extra?

A: Sample is available, if it is customized, small magnet can be free of charge; if it needs open mold, customers should pay for the cost. Customer should cover for the freight cost.

Q: Can I print logo on the magnets?

A: YES, We can help to print customized logo or marks on the magnets..

Q: How can we guarantee quality?

A: Always a pre-production sample before mass production; Always final Inspection before shipment;

Q: What is the difference between bonded and sintered neodymium magnets?

A: Compared with bonded NdFeB magnets, sintered NdFeB magnets have high processing costs, large losses during processing, and poor dimensional accuracy. But its advantage is also obvious. At present, the (BH) max of the sintered NdFeB magnet can reach more than 50M, while the bonded magnet is generally below 10M.

Q: What is the magnetic strength of bonded NdFeB magnets?

A: Although the magnetic properties of bonded NdFeB magnets are slightly lower than those of sintered NdFeB magnets, they are still high-performance permanent magnet materials with high remanence and coercivity. Their magnetic energy product is usually between 5-12MGOe.

Q: What is the temperature resistance of bonded NdFeB magnets?

A: The performance of bonded NdFeB magnets at high temperatures is not as good as that of sintered NdFeB magnets, and they are easily demagnetized. However, by adding specific alloy elements or adopting special production processes, their high temperature resistance can be significantly improved. Generally speaking, bonded NdFeB magnets can operate in the temperature range of -40°C to 150°C.

Q: What is the service life of bonded NdFeB magnets?

A: The service life of bonded NdFeB magnets is affected by many factors, including the use environment, working conditions, surface treatment, etc. Under ideal conditions, the service life of bonded NdFeB magnets is very long, usually up to several decades or even longer.

Q: What shapes can bonded NdFeB magnets be made into?

A: Unlike injection molded NdFeB magnets, bonded NdFeB magnets can be processed into complex shapes, usually simple rings, rectangles, arcs, etc.

As one of the most professional bonded neodymium magnet manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy customized bonded neodymium magnet at competitive price from our factory.

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