| Sintered
Ferrite Magnets are essentially composed of oxide
materials with Barium Carbonate or Strontium Carbonate,
manufactured under a powder metallurgical process. The
feature of low recoil permeability, along with the high
coercive force, makes them highly resistant to
demagnetizing fields. In addition, their relatively low
specific density and economical cost are also very
attractive to the magnet designers. When designing the
ferrite magnets for a particular application, primary
consideration should be given to its shape limitation due
to the powder metallurgical manufacturing process and the
temperature dependence of ferrite materials. Ferrite
Magnets has good anti-corrosion performance,
no surface treatment needed.
There
are two manufacturing process for Sintered Ferrite
Magnets: Dry
Process & Wet Process. By dry process, can produce
isotropic & anisotropic magnets; by wet process, only
anisotropic magnets can be produced. Isotropic ferrite
magnets are not oriented and can be magnetized in any
direction; anisotropic ferrite magnets are different, they
are all oriented in the manufacturing direction, and
should be magnetized in the direction of orientation. For
dry process, the tool can be changed easily and the
tooling charge is cheap; while for wet process, it is complicated to change the
tool and the tooling charge is higher.
At
present, we have put our emphasis on arc segment magnets
for electric motors, disc magnets and block magnets for
various applications, including automotive industry, with
annual production capacity reach 15,000 tons.
We have got ISO9000
and
QS9000 certified already.
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