Neodymium Iron Boron Magnet

ceramick magnets (1)
ceramick magnets (1)

Ergonomic Design

Dailymag magnetic sweeper is composed of main four parts which contribute to a unit performance.

Magnet Sweeper Feature

Permanentmagnet Neodymium Iron Boron Magnets

Neodymium Iron Boron (NdFeB) Magnets are the world’s strongest permanent magnet because it provides superior permanent magnetic qualities and high-cost performance, unlike traditional magnets. They are widely used in the manufacturing of industrial, medical equipment, home appliances, energy, and transportation-related products. With many years of design and R&D experience, Dailymag has dedicated itself to the development and manufacturing of high coercive force, low reversible temperature coefficient, and low weight loss NdFeB. It features high-performance consistency and excellent quality. We can provide customers with customized neodymium iron boron magnets and solutions.

Surface Coatings for Neodymium Iron Boron Magnets

NdFeB magnets with nickel, zinc, or tin plating have good corrosion resistance, although longer lead times or higher volumes may be necessary. Ion vacuum deposition (IVD) techniques can also be used to plate neodymium magnets. This particular plating offers exceptional adherence to the material and is very controllable in thickness. A number of organic coatings with good corrosion resistance have also been successfully produced for NdFeB. In particularly harsh settings, a combination of coating processes or encapsulating the material in a sealed housing may be preferable.

Maximum Curie Temperature

The NdFeB or neodymium iron boron magnets have a Curie temperature ranging from around 310 C for 0% cobalt to more than 370 C for 5% cobalt. In addition, neodymium magnets have a relatively high Reversible Temperature Coefficient of Induction, which reduces overall magnetic power as temperature rises. Because of its corrosion nature, neodymium iron boron magnets have some limitations as well. For that reason, Dailymag provides protective coating or plating for humid conditions. E-coating, powder coating, nickel plating, zinc plating, perylene, and mixtures of these coatings have all been effectively applied to these magnets.

Sintered NdFeB Magnet

Sintered NdFeB magnet is the product with the largest output and the most widely used in the NdFeB family. It is produced by the powder metallurgy method and can be divided into 7 series of N, M, H, SH, UH, EH and TH according to the different coercivity of the product. The sintered NdFeB magnet that has been commercially produced has a remanence of up to 1.45T and an intrinsic coercive force of up to 2786kA/m. The operating temperature is between 80° and 200° depending on the coercivity. The Sintered NdFeB magnet is easily oxidized and corroded, so surface treatment is required. According to the different requirements of the use environment, phosphating, electroplating, electroless plating, electrophoresis, vapor deposition, and other surface treatment methods can be used. Common coatings are zinc, nickel, nickel-copper-nickel, epoxy resin, etc.

Bonded NdFeB Magnet

Sintered NdFeB magnets are difficult to process into special shapes, and they are easy to crack, break, and difficult to assemble during the process. In order to solve these problems, people tried to crush the permanent magnets and mix them with adhesives, and then press them into a shape in a magnetic field. Thus, the bonded NdFeB magnet was developed. It has the advantages of low cost, high dimensional accuracy, a large degree of freedom of shape, good mechanical strength, light specific gravity, etc., and has been widely used in the market. There are currently 4 processes for forming bonded neodymium magnets: calendering, injection molding, extrusion, and compression molding, of which calendering and injection are more mainstream. Bonded NdFeB magnets are generally only 80% of theoretical density due to the addition of a large amount of adhesive, so they are weaker than sintered NdFeB magnets in terms of magnetic properties. Bonded NdFeB magnets are isotropic magnets, with the same magnetism in all directions, so they are convenient to manufacture multi-pole monolithic magnets. (Bonded NdFeB magnets can also be made into anisotropic magnets)

Rare Earth Permanent Magnets

Magnet Shop is an industry-leading supplier of licensed rare-earth magnets and permanent magnets of all types. In addition to neodymium magnets, we offer samarium cobalt magnets, alnico magnets, ceramic magnets, and flexible magnets in premium grades, sizes and shapes. Not all of our magnets are displayed on this website, let us know if you don’t see what you are looking for

Conclusion

The three types of neodymium magnets have their advantages. Due to the huge difference in magnetic properties and molding, the intersection between bonded NdFeB magnets and sintered NdFeB magnets is not large. Bonded NdFeB magnets are mainly used in fields such as hard disk drive spindle motors and low-power micro-special motors, while sintered NdFeB magnets are more used in fields such as high-power drive motors. The hot-pressed NdFeB magnets are only used in automobile EPS due to the limitation of shape. Thank you for reading our article and we hope this brief introduction to Neodymium Magnets can help you know the NdFeB magnets better. If you want to know more about magnets, we would like to advise you to visit Stanford Magnets for more information. As a leading magnet supplier across the world, we have been involved in R&D, manufacturing, and sales of various types of magnets since the 1990s and can provide our customers with high-quality permanent magnets like neodymium magnets, SmCo magnets, AlNiCo magnets, and ferrite magnets at a very competitive price.

APPLICATIONS

Permanentmagnet neodymium iron boron magnets are widely used in machinery, video and audio equipment, telecommunication technologies, medical devices, office automation systems, spacecraft and aviation, and many more applications. More than 95% of our products are used in energy-efficient PM motors, particularly Servo Motors, New Energy Vehicles Drive Motors, Compressor Motors, Elevator Motors, High-Speed Motors, Explosion-proof Motors, and so on.

Information of our neodymium ARC Magnet

Neodymium Arc magnet

What are neodymium arc magnets?

Neodymium arc magnets are a type of rare-earth magnet made from an alloy of neodymium, iron, and boron, shaped in the form of an arc or segment. These magnets are designed to fit the round shape of motors and generators, providing a powerful magnetic field in a specific direction.Alnico channel bar magnets are composed of an Alnico magnet (made from an alloy of Aluminum, Nickel, and Cobalt, and often including Copper and sometimes Titanium) seated within a metal channel. This channel acts to direct the magnet's field, increasing its strength on the open side of the channel.

active circle

How do neodymium arc magnets differ from other neodymium magnets?

The main difference lies in their shape. While neodymium magnets can come in various forms, such as discs, blocks, or cubes, arc magnets are specifically cut into arc shapes to fit circular assemblies. This shape allows them to generate a directional magnetic field around the circumference of a circle, making them ideal for rotational applications.

arc magnet

How strong are neodymium arc magnets?

Neodymium arc magnets are among the strongest types of magnets available, capable of generating significant magnetic force. The strength of an arc magnet depends on its grade, size, and the design of the magnetic circuit in which it is used.

Neodymium Arc magnet

Are neodymium arc magnets coated?

Like other neodymium magnets, arc magnets are typically coated to prevent corrosion. The coatings can include nickel, copper, zinc, or epoxy, which protect the magnet from moisture and chemical exposure.

Neodymium Arc Magnet

Do neodymium arc magnets have a specific magnetic orientation?

Yes, neodymium arc magnets are manufactured with a specific magnetic orientation that is aligned with the arc's geometry. This orientation is crucial for their use in motors and generators, where the magnetic field needs to interact precisely with the device's other components.

neodymium arc magnet 1

How should neodymium arc magnets be handled?

Handling neodymium arc magnets requires caution due to their strong magnetic force. Protective gloves should be worn to prevent injuries, and the magnets should be kept at a safe distance from electronic devices and magnetic storage media to avoid damage.

Double tap arc magnet

Can neodymium arc magnets lose their magnetism?

Neodymium arc magnets can lose their magnetism if exposed to high temperatures, strong demagnetizing magnetic fields, or if they are physically damaged. However, under normal operating conditions, they can maintain their magnetism for decades.

Neodymium Arc magnet

How are neodymium arc magnets manufactured?

The manufacturing process for neodymium arc magnets involves melting the raw materials (neodymium, iron, and boron), casting the alloy into ingots, pulverizing the ingots into a fine powder, pressing the powder in a magnetic field to align the particles, sintering to fuse the particles, and then cutting the magnets into the desired arc shape before coating them for protection.

Neodymium Iron Boron Magnets
Strong Neodymium (NdFeb) Magnets

Neodymium magnets (also known as “Neo magnets”, “NdFeB magnets”, “Nd Magnets”, or “NIB magnets”), are strong permanent magnets made from an alloy of neodymium, iron and boron. Part of the rare-earth magnet family, neodymium magnets have the highest magnetic properties and energy product of all permanent magnet materials. Due to their high magnetic strength, resistance to demagnetization and relative low cost, neodymium magnets are the preferred choice for many consumer, commercial, industrial and technical applications requiring optimal magnetic performance.

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Office Address

Example Niki China , Example ,

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Call Us

+86-13858922573