Compression Molding?

Compression_molding magnet

technical process:

A method of?molding?in which the molding magnetic material, generally preheated, is first placed in an open, heated. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, while?heat?and?pressure?are maintained until the molding material has cured. The process employs thermosetting?resins?in a partially cured stage,?Compression molding with high cost performance when higher volumes are required?compression molded magnets?are best produced in tens or hundreds of thousands of magnets per production run, with a very low break even point with magnet molding machine.


  • A higher ratio of magnetic material powder to binder gives higher magnetic performance than the injection molded magnets;
  • NdFeB, SmCo, Alnico and Ferrite etc can be supported
  • Hybrid versions as well (e.g. Ferrite+NdFeB) with combined properties
  • Good tolerances – secondary machining not needed
  • Low electrical conductivity, low eddy currents


  • The compression bonding process is limited to simpler shapes such as rectangles, rings, arcs and cylinders. A consistent cross sectional area is required along the pressing direction
  • Possible tooling charges for production and magnetizing

Typical Applications

  • Motors
  • Position sensors
  • Hybrid performance components
  • Inertial switch
  • Automobile industry