Permanent Magnet Ferrite Used In Motor Of Motorcycle Engine
Motorcycle Ferrite Magnets
What does Xinheng offer to customers?
Our company manufactures an-isotropic ceramic strontium ferrite
magnet made by means of wet compression molding.
What's the feature of ceramic strontium ferrite magnet made by wet
compression molding?
Composition - Contain strontium ferrite (SrFe12O19) as the primary
magnetic material. Strontium ferrite has good magnetic properties
and is inexpensive to produce.
Density - Have a high relative density of around 95% or more after
sintering. This gives good mechanical strength.
An-isotropy - Exhibit strong magnetocrystalline an-isotropy due to
their hexagonal crystal structure. This results in a preferred
direction of magnetization along one axis.
Particle shape - The strontium ferrite powder used typically has a
hexagonal platelet morphology which helps promote magnetic
an-isotropy during molding and sintering.
Molding method - The powder is mixed with a liquid binder and
compression molded into a dense green compact using high pressures.
This orients the an-isotropic particles.
Firing process - The compact is then sintered at high temperature
to develop density while preserving the induced magnetic anisotropy
orientation from molding.
Remanence - Have a maximum magnetic flux density or remanence along
the axis of anisotropy, but little/no remanence perpendicular to
it.
Coercivity - Usually have medium to high coercivity depending on
additives, density, and anisotropy level achieved.
What's the key advantages of ceramic strontium ferrite magnets made
by wet compression molding?
Low cost - Strontium ferrite is inexpensive and the wet molding
process is relatively simple. This makes them cheaper than
rare-earth magnets.
High magnetic property-Even without heavy rare earth element
additions, strontium ferrite magnets can achieve coercivities of
700-1000 kA/m, making them suitable for many applications.
Dimensional consistency - The compression molding process allows
for close dimensional tolerances and uniform magnet shapes to be
produced consistently.
Temperature stability - Strontium ferrite magnets have high Curie
temperatures, typically around 450-470°C. They maintain good
magnetic properties over a wide operating temperature range.
Resistance to corrosion - Being fully dense ceramic materials, they
are not prone to corrosion like bonded magnets containing
additives.
Mass production capability - The molding process is amenable to
automated high-volume manufacturing of complex magnet geometries.
PHYSICAL PROPERTIES OF SINTERED FERRITE MAGNETS
| | Units | Sintered Ferrite (Ceramic) |
| Curie Temperature | ºC | 450 |
| Maximum Operating Temperature | ºC | 350 |
| Hardness | Hv | >530 |
| Density | g/cm3 | 4.8 – 5.0 |
| Relative recoil permeability | μrec | 1.05-1.1 |
| Temperature Coefficient Br | %/ºC | -0.18 |
| Temperature Coefficient iHc | %/ºC | 0.11-0.40 |
| Anti-Bending Strength | N/m2 | (0.5-0.9)×108 |
| Anti-Compressive Strength | N/m2 | ≥6.9×108 |
| Anti-Tensile Strength | N/m2 | (0.2-0.5)×108 |
| Specific Heat | J/kg·K | 600-900 |
| Resistivity | Q.cm | >104 |
What's the application of Xinheng's permanent ferrite magnets?
Xinheng mainly manufactures the following types of ceramic arc
segment magnets:
- Automotive motor magnet including automobile starter motor magnet,
automobile wiper motor magnet, automobile rolling window motor
magnet, automobile heating and cooling fan motor magnet, automobile
seat motor magnet, automobile sunroof motor magnet, automobile
powsteering motor magnet, automobile tailgate motor magnet,
automobile oil pump motor magnet, automobile ABS anti-lock motor
magnet, etc.
- Inverter home appliance magnet including inverter washing machine
motor magnet, inverter refrigerator motor magnet, inverter
air-conditioner motor magnet,etc.
- Fan motor magnet including ceiling fan motor magnet, floor fan
magnet, etc.
- Motorcycle motor magnet including motorcycle starter motor magnet,
motorcycle flywheel magneto magnet, etc.
- Electrical tool motor magnet including cutting machine motor
magnet, electric sawing machine motor magnet, lawn mower motor
magnet, gasoline generator magnet, etc.
- Actuator motor magnet including medical bed actuator motor magnet,
TV lifting bracket actuator motor magnet, desk lifting actuator
motor magnet, smart home appliance actuator motor magnet, etc.
How Xinheng fabricates its permanent strontium ferrite magnet?
FERRITE POWDER GRADE OF AUTOMOBILE Blower MAGNET
Grade | | | | |
| mT | Gs | KA/m | Oe | KA/m | Oe | KJ/m3 | MGOe |
| Y30H-1 | 380-400 | 3800-4000 | 230-275 | 2890-3460 | 235-290 | 2950-3640 | 27.0-32.5 | 3.4-4.1 |
| Y30H-2 | 395-415 | 3950-4150 | 275-300 | 3450-3770 | 310-335 | 3890-4200 | 27.0-32.0 | 3.4-4.0 |
| Y33H-2 | 410-430 | 4100-4300 | 285-315 | 3580-3960 | 305-335 | 3830-4200 | 31.8-35.0 | 4.0-4.4 |
| Y38 | 440-460 | 4400-4600 | 285-305 | 3580-3830 | 294-310 | 3690-3890 | 36.6-40.6 | 4.6-4.8 |
| Y40 | 440-460 | 4400-4600 | 330-354 | 4150-4450 | 340-360 | 4270-4520 | 37.6-41.8 | 4.7-5.2 |
AUTOMOBILE Blower MAGNET SPECIFICATION TABLE
No. | Item | R | r | W | L | h | Grade | Application |
| 1 | W020C | 28 | 21.5 | 50.0 | 50 | 6.3 | Y30H-2 | Wiper motor |
| 2 | W024 | 17.5 | 12.15 | 30.7 | 32 | 5.4 | Y33 | Oil pump motor |
| 3 | W037 | 33 | 30.5 | 60.0 | 41.0 | 7.2 | Y33H-2 | Heater motor |
| 4 | W037A | 35.5 | 33.2 | 64.0 | 38.0 | 7.3 | Y33H-2 | Heater motor |
| 5 | W049 | 48.5 | 41.5 | 53.5 | 30.0 | 7.0 | Y30H-1 | Electrical fan |
| 6 | W069 | 48 | 41.25 | 52.0 | 20.0 | 6.65 | Y30H-1 | Electrical fan |
| 7 | W092 | 19.2 | 12.9 | 26.4 | 53.0 | 5.6 | Y30H-2 | Window motor |
| 8 | W082 | 29 | 29 | 33 | 56 | 6 | Y33H-2 | Power steering motor |
| 9 | W107 | 29.2 | 27.8 | 34 | 76.5 | 5 | Y33H-2 | Power steering motor |
| 10 | W109 | 30.75 | 31.35 | 36.3 | 80 | 5.9 | Y33H-2 | Power steering motor |
| 11 | W4180 | 30 | 22.7 | 34.0 | 45.0 | 7.3 | Y33H-2 | Starter motor |
| 12 | W4186 | 36.3 | 33.9 | 64.5 | 36.0 | 8.2 | Y33H-2 | Heater motor |
Permanent magnet ferrite plays an important role in motorcycle
engines, mainly used in the field of motors and sensors:
Permanent magnets in motors: In motor motors of motorcycles (such
as starter motors or other auxiliary motors), permanent magnet
ferrite can be used as a permanent magnet in the rotor part,
providing the necessary magnetic field. This design can improve the
efficiency of the motor and reduce the size and weight of the
motor, thereby improving the performance and handling of the
motorcycle.
Reduce energy consumption: Compared to using the current provided
by the power supply to generate a magnetic field, permanent magnet
ferrite can maintain a stable magnetic field, thereby reducing
energy consumption, which is an important factor in improving the
overall energy efficiency of a motorcycle.
Improved starting performance: During the starting process of the
motorcycle, the permanent magnet ferrite can provide strong
starting torque to ensure that the engine can start smoothly. This
is especially important in cold starts or under high load
conditions.
High temperature resistance and stability: permanent magnet ferrite
has good heat resistance and stability, can be used in harsh
working environment for a long time, to adapt to the motorcycle
engine in high temperature, high vibration and other conditions of
operation.
Applied to sensors: In all kinds of sensors of motorcycles (such as
position sensors, speed sensors, etc.), permanent magnet ferrite is
also often used as a magnetic field source to improve the working
accuracy and sensitivity of the sensor.
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