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
