EAM Injection Molded Magnets — Endless Possibilities...
EAM's Arburg Injection
Molders use a variety of different formulations to achieve a wide
range of properties. The Selogica control system
optimizes all processes for prototyping and short or long production
runs.
One of the most innovative advances in magnet manufacturing
in recent years is the development of injection molded
magnet production. Injection molded magnets are made by
mixing magnetic material with a polymer binder (usually
nylon or PPS) which then allows the magnet to be injection
molded just as any other plastic would be.
Injection molding allows the ability to produce very
intricately shaped magnets with extremely tight tolerances
and a wide variety of physical and magnetic characteristics.
The properties of injection molded magnets vary greatly,
depending on the type of magnetic material and binder
utilized. EAM offers both Neodymium and Hard Ferrite
injection molding capability, and it is also possible to
utilize a blend of different magnetic material to product
the desired properties. Several types of binder can be
employed depending on the application, and we offer a
variety of grades of nylon and PPS to suit the specific
needs of our customers. See a comparison of the relative strengths of magnetic
materials
EAM’s knowledgeable product development team will assist you
in choosing the optimal combination of binder and magnet
material for your specific application.
One of the greatest advantages of the injection molding
process is that a high degree of shape complexity is
possible — ie. gears, snap fits and undercuts. It is also
possible to incorporate shafts, brushes and other inserts
into the process, simplifying the magnetic assembly
manufacturing process. Injection molded magnets can be
insert molded directly onto or around existing components,
often eliminating the need for additional steps in the
manufacturing process.