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Injection bonded magnets
offer a combination of high magnetic
strength and excellent physical
properties. They offer large scale
manufacture of shaped parts of close
dimensional and magnetic tolerances.
As smaller more efficient designs
are therefore available then with
increased design freedom lower
losses of magnetism can be achieved.
Typical
tolerances will depend largely on
the part configuration and the type
of tooling selected. Designers can
consider standard tolerances of
±0.075mm. Tighter tolerances are
available on request. Different
binders are available including
Nylon 6, 12, EEA and PPS. The
material for any specification is
chosen based on many factors for
example temperature, strength, water
absorption, solvent resistance,
complexity of shape and
compatibility with the magnet power.
The
injection moulding process allows
for moulding directly on, in or over
other components thereby reducing
secondary processing costs. This is
called insert or overmoulding.
Injection moulded magnets can be
produced from very simple forms to
quite complex arrangements in sizes
up to 100gms. Further processing is
rarely required but if necessary
this can be achieved using
conventional tools.
Typical Applications
Magnet
stators for fractional horsepower
D.C. motors.
Multi-pole magnetic motors for
brushless D.C. and stepper motors.
Magnetic
actuators for magnetic switches and
solenoids.
Sensors
for activators and industrial
applications.
Material Characteristics of Bonded
Ferrite Magnets
|
TYPE NO. |
Binder
|
Magnet
Material |
Br
(Gs) |
Hcb
(Oe) |
Hcj
(Oe) |
BH(max)
(MGOe) |
Density
(g/cm3) |
Usage
|
|
FBP-1210 |
Nylon6
|
Baferrite
Srferrite
|
650~750 |
500~600 |
2375~2875 |
0.08~0.1 |
2.4~2.5 |
PCM for
TV、Monitor
|
|
FBP-1211 |
Nylon6
Nylon12 |
Baferrite
Srferrite
|
1100~1300 |
875~1062.5 |
2375~2875 |
0.19~0.38 |
2.7~3.0 |
Isotropic
injection
magnet
|
|
FBP-1212 |
Nylon6
Nylon12
|
Baferrite
Srferrite
|
1300~1800 |
1062.5~1562.5 |
2375~2875 |
0.38~0.75 |
3.0~3.6 |
Isotropic
injection
magnet
|
|
FBP-1213 |
Nylon6
Nylon12
|
Baferrite
Srferrite
|
2100~2400 |
1500~2125 |
2000~2875 |
0.88~1.5 |
3.0~3.5 |
Anisotropic
injection
magnet
|
|
FBP-1214 |
Nylon6
Nylon12
|
Baferrite
Srferrite
|
2500~2600 |
2050~2175 |
2625~2875 |
1.49~1.56 |
3.35~3.55 |
Anisotropic
injection
magnet
|
|
FBP-1215 |
Nylon6
Nylon12
|
Baferrite
Srferrite
|
2500~3300 |
2100~2500 |
2600~3400 |
1.5~2.5 |
3.6~3.8 |
Anisotropic
injection
magnet
|
|
FBP-1216 |
Nylon6
Nylon12
|
Srferrite
|
2500~2600 |
2175~2300 |
2875~3500 |
1.51~1.59 |
3.35~3.55 |
Anisotropic
injection
magnet
|
|
FBP-1217 |
Nylon6
Nylon12
|
Srferrite
|
2500~2600 |
2300~2425 |
3500~4000 |
1.54~1.61 |
3.35~3.55 |
Anisotropic
injection
magnet
|
|
FBP-1218 |
Nylon6
Nylon12
|
Srferrite
|
2700~2800 |
2125~2250 |
2625~2875 |
1.79~1.86 |
3.5~3.65 |
Anisotropic
injection
magnet
|
|
FBP-1219 |
Nylon6
Nylon12
|
Srferrite
|
2700~2800 |
2250~2375 |
2875~3500
|
1.8~1.88 |
3.5~3.65 |
Anisotropic
injection
magnet
|
|
FBP-1220 |
Nylon6
Nylon12
|
Srferrite
|
2700~2800 |
2375~2500 |
3500~4000 |
1.81~1.89 |
3.5~3.65 |
Anisotropic
injection
magnet
|
|
FBP-1221 |
Nylon6
Nylon12
|
Srferrite
|
2750~2850 |
2250~2500 |
2625~3125 |
1.84~1.94 |
3.60~3.70 |
Anisotropic
injection
magnet
|
|
FBP-1222 |
Nylon6
Nylon12
|
Srferrite
|
2850~2950 |
2375~2625 |
2625~3125 |
1.94~2.06 |
2.65~3.75 |
Anisotropic
injection
magnet
|
|
FBP-1223 |
PPS
|
Srferrite
|
2450~2650 |
2125~2500 |
2625~3125 |
1.38~1.63 |
3.48~3.65 |
Anisotropic
injection
magnet
|
 |
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