Injection molding process:

Injection molding is the most common modern method of manufacturing plastic parts; it is ideal for producing and modify composite magnetic materials to appeal to specific application.

Injection Molding magnet:

Injection molded magnet

Isotropic material– the magnetized coil fixture design determines the magnetic material it takes.
Anisotropic type requires for the external magnetic flux, to set magnetic domain for magnetic powder in the polymer. For the sake of cost reduction, injection molded magnets are produced in tens or hundreds of thousands of magnets per production run. 

Magnetfirm is specialized in the field of injection molding of magnets and have long experience in (PA)polyamide modified.Base materials include Rare Earth magnet such as NdFeB, SmCo and SmFeN can molded as well as Ferrite material. (BaO, SrO or the mixture)The magnet powder must have a binder to be able and be molded and polymers as PA6, PA12 and PPS is normally used. PA-6 is mainly used in auto spare parts, electronics and mechanic assemblies. PA-12 performs well in water meter, cable box, coupling and the back of PV due to its excellent isolating property.The density of these magnets is lower compared to the magnets produced by sintering, the working temperature is increased to over 150 centigrade.

meter magnet
injection molded ceramic magnet
socketed magnet

Applications of Injection Molded Magnet

  • Motors
  • Sensors
  • Injection molded rotor assemblies
  • Insert molded magnetic components
  • Over molding magnetic components
  • Medical pump magnet