compression bonding

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  • How are Neodymium Magnets Made

How are Neodymium Magnets Made?

How are Neodymium Magnets Made? The two processes used to manufacture neodymium magnets are sintering and bonding. The properties of the finished magnets vary depending on how they are produced with sintering being the best of the two methods. How Neodymium Magnets are Made Sintering Melting: The Neodymium, Iron and Boron are measured out and [...]

  • Injection molding techniques of bonded magnets

Bonded Magnet Materials and Processing Options

Bonded Magnet Materials and Processing Options Bonded magnets are an important but often overlooked group of products that magnetic circuit and device designers should consider when choosing the optimum permanent magnet type for their specific application need. In their most basic form bonded magnets consist of two components; a hard magnetic powder and a non-magnetic [...]

  • 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

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?
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