Bonded Magnets

/Bonded Magnets

Bonded Injection Magnets

Ferrite Bonded Injection Magnets Ferrite Plastic Magnet has the features of low magnetic proprty and lower cost. ·Anisotropy Ferrite Magnetizing while the process of injection molding, it can greatly improve the product's magnetic energy produce and could make (BH) reach to 1.60 MGOe--2.20 MGOe. It is a high ratio of performance materials, mostly used as [...]

By |June 1st, 2018|Bonded Magnets, Permanent Magnet|Comments Off on Bonded Injection Magnets
  • Custom Magnetic Solutions

Custom Magnetic Solutions

Custom Magnetic Solutions We are the perfect partner for innovative businesses looking to maximise performance, improve design and reduce costs. We have the expertise to tackle the most challenging of magnetic applications, working with clients to understand their project, then designing, developing and producing a value adding magnetic solution. Having the full package of magnet [...]

  • Bonded Magnet Material And Process

Bonded Magnet Material And Process Options

Bonded Magnet Material And Process Options Injection Molding Compression Bonding Calendering Extrusion Bonded Magnet Material And Process Compression Bonding or Injection Molding? Injection Molding • Complex forms with good geometrical tolerances • Multi‐cavity tooling • Over and insert molding But • Expensive tooling • Lower magnetics (66% volume loading of magnetic powder) • NdFeB and ferrite Compression Bonding • Thin walled large L/D ratio rings • Simple low cost tooling • Higher magnetics (75% volume loading of magnetic powder) But • Simple geometries • Value added operations during pressing very difficult • NdFeB only CLEANING MAGNET TESTING MAGNET How long should my permanent magnet last? MAGNETIC APPLICATIONS

By |May 11th, 2018|Bonded Magnets, Bonded NdFeB, Compression Molded NdFeB, Injection Molding NdFeB, Magnetic Knowledge, Magnetic Materials, Permanent Magnet|Comments Off on Bonded Magnet Material And Process Options
  • Typical Compression Bonded Magnetic Properties

Typical Compression Bonded Magnetic Properties

Typical Compression Bonded Magnetic Properties Many suppliers publish specifications for a nominal 10 MGOe magnets with a minimum limit of 9 MGOe. Similar for a nominal 11 MGOe magnet; minimum limit is 10 MGOe. Have to design to lower limit of BHmax Typical Compression Bonded Magnetic Properties BHmax Improvement in Compression Bonded Magnets The BHmax of a compression bonded isotropic NdFeB magnet is influenced by the following two factors: 1. Volume fraction of magnetic phase in the magnet – typically measured by the density of the magnet. • We are investigating increasing the pressing pressure which requires special press construction, lubricants and tooling materials – current production pressing pressures are 7tonnes/cm2 for 5.9 g/cm3 and 10MGOe; estimated that > 20 tonnes/cm2 required for 6.3 g/cm3 and > 11 MGOe. • Optimize the particle encapsulation chemistry and process. • Tailored multimodal PSD’s for maximum packing density. • Particle shape control. 2. Magnetic powder Br/BHmax • Increase isotropic Br of powders while maintaining sufficient Hci to have “linear” B‐H  demagnetization characteristic at the application temperature. Arc Permanent Magnet Neodymium Nickel N35UH   Neodymium Generator Arc Magnet Nickel N33H   Arc Neodymium Magnet Nickel N30H   Segment Neodymium Magnet Nickel N52

By |May 7th, 2018|Bonded Magnets, Bonded NdFeB, Compression Molded NdFeB, Magnet Properties, Magnetic Knowledge, Magnetic Powders, NdFeB|Comments Off on Typical Compression Bonded Magnetic Properties

What Are Bonded Magnets Anyway?

What Are Bonded Magnets Anyway? • Bonded magnets are composites of a permanent magnetic powder(s) embedded in a non‐magnetic matrix. • The matrix is typically a thermoplastic or elastomeric binder. • Common processing techniques are extrusion, injection molding, compression bonding, and calendering. • Exhibit excellent mechanical properties compared to fully dense rare earth and ferrite magnets. • End product has good finish and dimensional tolerances requiring no finishing operations. • Injection molded magnets can be formed into complex shapes and be insert or over molded directly onto other components to produce assemblies. • The non‐magnetic binder lowers the density of the magnet and dilutes the contribution of the magnetic powder. • They generate less magnetic output per unit volume than fully dense magnets. • The two most common magnetic powders are isotropic NdFeB and hard ferrite. Neodymium Bonded Radial Ring Magnet   Rare Earth Neodymium Isotropic Ring Bonded Magnet   Compression Bonded Ring Magnet   Bonded Ring NdFeB Magnet

By |May 3rd, 2018|Bonded Magnets, Bonded NdFeB, Compression Molded NdFeB, Injection Molding NdFeB, Magnetic Knowledge, Magnetic Powders, NdFeB, Permanent Magnet|Comments Off on What Are Bonded Magnets Anyway?