Neodymium Iron Boron Magnets Manufacturer

Neodymium Iron Boron Magnets Manufacturer

Also known as NdFeB, neodymium iron boron magnets are made of neodymium, iron, and boron. They are used to make permanent magnets.

  • Last up to 100 years if properly maintained.
  • It has good permanent magnetic properties.
  • Used in the fields of communications, energy, and more.

Dailymag 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.

Earphone Speaker NdFeb Magnet
Earphone Speaker NdFeb Magnet

Grade: N30-N54

Plating: zinc coat, nickel coat, black epoxy, or customized

Shape: Customized

Uses: Electric equipment, 5G mobile phone, refrigerator, audio, automobile, printer, etc.

Mobile Phone Speaker NdFeb Magnet
Mobile Phone Speaker NdFeb Magnet

Grade: N30-N54

Plating: zinc coat, nickel coat, or black epoxy

Shape: Customized

Uses: VCM, MRI, separator, printer, 5G mobile phone, artwork, audio, motor, etc.

Automotive Motor NdFeb Magnet
Automotive Motor NdFeb Magnet

Grade: N35 to N54

Plating: zinc coat, nickel coat, or black epoxy

Shape: Customized

Uses: Automotive electric equipment, separator, motor, audio, 5G mobile, etc.

Arc Segment NdFeb Magnet for Motor Rotor
Arc Segment NdFeb Magnet for Motor Rotor

Grade: N48SH N50SH

Plating: Nicuni coat or customized

Shape: Arc segment

Uses: Electric motor, starter servo motor, generator, electric tools, automobile, printer, etc.

Arc Tile Segment NdFeb Magnet
Arc Tile Segment NdFeb Magnet

Grade: N48SH N50SH

Plating: Nicuni coated or customized

Shape: Tile

Uses: 5G mobile, electric motor, electric tools, refrigerator, VCM, etc.

Rectangle Block NdFeb Magnet
Rectangle Block NdFeb Magnet

Grade: N35-N52

Plating: nickel coat, zinc coat, or Black Epoxy

Shape: Block

Uses: Speakers, artwork, audio, automobile, refrigerator, separator, motor, etc.

Block Thin NdFeb Magnet
Block Thin NdFeb Magnet

Grade: N33H-N46H

Plating: Zinc coat, Black Epoxy, Nickle coat

Shape: Block

Uses: MRI, printer, mobile, speakers, etc.

N52 Block NdFeb Magnet
N52 Block NdFeb Magnet

Grade: N52

Plating: Nickle coat, zinc coat, black epoxy

Size: 60 X 30 X 10

Uses: Artwork, speakers, electric motor, VCM, MRI, motor, automobile, etc.

N50 Big Ring NdFeb Magnet
N50 Big Ring NdFeb Magnet

Diameter: D60 (or custom)

Thickness: T2 T3 T4 T5 T10 T 20 T25 (or custom)

Shape: Round Ring

Uses: Refrigerator, 5G mobile, audio, automobile, etc.

Nickel Plated Countersink Ring NdFeb Magnet
Nickel Plated Countersink Ring NdFeb Magnet

Grade: N35-N52

Shape:  Countersink Ring

Magnetization Direction: Axial or Diametrical

Uses: Sensors, separator, 5G mobile, speakers, motor, etc.

N48 Customized Ring NdFeb Magnet
N48 Customized Ring NdFeb Magnet

Grade: N48

Plating: Nickel coat, zinc coat, black epoxy

Shape: Round Ring

Magnetization Direction: Diametrical or axial

Round Disc NdFeb Magnet
Round Disc NdFeb Magnet

Grade: N35-N52

Diameter: D8 D10 D12 D14 D18 etc. (Customized)

Thickness: T2 T3 T4 T5 T10 T20 T25 (Customized)

Shape: Disc

Small Strong Disc NdFeb Magnet
Small Strong Disc NdFeb Magnet

Grade: N35-N52

Plating: Nickel coat, black epoxy, zinc coat, custom coat

Shape: Disc

Uses: Used in small components like small speakers, sew-in wearing, headphones, and 5G smartphone.

N42 Cylinder NdFeb Magnet
N42 Cylinder NdFeb Magnet

Grade: N35-N52 (or Customized)

Size: D12X25

Shape: Cylinder

Certification: ROSH, SGS, TS16949, ISO14000, ISO9000

5G Mobile NdFeb Magnet
5G Mobile NdFeb Magnet

Grade: N35 to N52

Plating: nickel coat, black epoxy, or zinc coat

Shape: Irregular

Uses: For smartphone, neodymium magnets are used in voice coil motors because it is small magnet yet powerful at the same time. It can operate the auto-focus system in a second.

15 Products Found.

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.

Maximum Working Temperature
Surface Coatings for Neodymium Iron Boron Magnets

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.

APPLICATIONS

Dailymag 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.

Applications

Production Process of Neodymium Iron Boron Magnets

Production Process
Production Process

There are two primary processes for producing neodymium iron boron magnets:

Sintered magnet method or traditional powder metallurgy:

Sintered neodymium iron boron magnets are made by melting raw materials in a furnace, casting them into a mould, and cooling them to create ingots. The alloys are ground and milled, and the powder is sintered into dense blocks. After that, the blocks are heat-treated, cut to shape, surface-treated, and magnetized.

Bonded magnet technique or rapid densification:

Melt spinning a narrow ribbon of the NdFeB alloy produces bonded neodymium iron boron magnets. The ribbon is made up of nano-scale Nd2Fe14B grains that are randomly arranged. This ribbon is then pulverized into particles before being combined with a polymer and compression- or injection-molded into bonded magnets.

Grades
Grades

Higher grades indicate more powerful magnets.

  • N30 – N55
  • N30M – N50M
  • N30H – N50H
  • N30SH – N48SH
  • N30UH – N42UH
Magnetic Properties
Magnetic Properties
  • Greatest energy product (BHmax), magnetic energy density, is defined as the maximum value of magnetic flux density (B) times magnetic field strength (H).
  • The temperature at which a substance loses its magnetic is known as the Curie temperature (TC).
  • The magnetic field strength is measured by remanence (Br).
  • Coercivity (HCI), is the material’s resistance to demagnetization.
Caution!
Caution!

Under the following situations, do NOT use Neodymium Iron Boron magnets:

  • In an alkaline, corrosive, or chemical solvent
  • In either water or oil, unless hermetically sealed
  • In an electrically conducting liquid, such as a water-containing electrolyte
  • In a hydrogen-containing environment, particularly at high temperatures.
  • Corrosive gas environments, such as Cl, NH3, Nox, and so on.
Different Shapes
Different Shapes

Neodymium Iron Boron magnets are available in different shapes, such as:

Neodymium Iron Boron Magnets Advantages
Neodymium Iron Boron Magnets Advantages
  • Extremely powerful.
  • Relatively low cost: by weight, about 20x Ferrite magnets, by “Dollar per BHmax,” approximately 1.5x Ferrite magnets
  • When compared to alnico and samarium cobalt magnets, it is relatively easy to process.
Key Challenges
Key Challenges
  • Properties deteriorate significantly at temperatures over around 150°C, depending on the grade and permeance coefficient of the magnet.
  • Most grades of NdFeB magnets require oxidation protection through coating or plating the magnets.
Do You Need Custom Neodymium Iron Boron Magnets for Your Project

Do You Need Custom Neodymium Iron Boron Magnets for Your Project?

What is Neodymium Iron Boron Magnet?

Neodymium magnets (sometimes called “NdFeB”, “Neo”, or “NIB”) are permanent magnets composed of neodymium, iron, and boron. They belong to the Rare-Earth magnet family and have the most powerful magnetic qualities of any permanent magnet, outperforming Samarium Cobalt (SmCo), Alnico, and Ferrite.

What is Neodymium Iron Boron Used for?

Different alloys, such as NdFeB (neodymium, iron, and boron alloy), retain their domains aligned and are utilized to manufacture permanent magnets.

How Long do Neodymium Magnets Last?

Neodymium magnets are permanent magnets that lose a percentage of their performance every 100 years if kept in optimum operational conditions.

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