High Temperature Resistant Permanent Magnet Ferrite Used In Advanced Motorcycle Motors
Introduction Of Motercycle Motor:
Motorcycle motor is an important component used to drive motorcycles, it is responsible for converting electrical or chemical energy mechanical energy, so as to drive the motorcycle forward. Motorcycle motor is usually composed of generator, motor and control system. Generators are responsible for converting the energy produced by burning gasoline or other fuels into electricity, which is stored in batteries. The electric motor uses electrical energy to drive the tires of the motorcycle, which generates mechanical power. The control system is responsible for managing the transmission and conversion of electrical energy, as well as controlling the output power of the motor. There are many types of motorcycle motors, including internal combustion engines, electric motors and hybrid power systems. When choosing a motorcycle motor, it is necessary to consider power output, fuel efficiency, service life and other factors. The quality and performance of motorcycle motor directly affect the power performance and fuel economy of the whole vehicle
What's the feature of ceramic strontium ferrite magnet made by wet compression molding?
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Composition - Contain strontium ferrite (SrFe12O19) as the primary magnetic material. Strontium ferrite has good magnetic properties and is inexpensive to produce.
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Density - Have a high relative density of around 95% or more after sintering. This gives good mechanical strength.
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An-isotropy - Exhibit strong magnetocrystalline an-isotropy due to their hexagonal crystal structure. This results in a preferred direction of magnetization along one axis.
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Particle shape - The strontium ferrite powder used typically has a hexagonal platelet morphology which helps promote magnetic an-isotropy during molding and sintering.
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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.
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Firing process - The compact is then sintered at high temperature to develop density while preserving the induced magnetic anisotropy orientation from molding.
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Remanence - Have a maximum magnetic flux density or remanence along the axis of anisotropy, but little/no remanence perpendicular to it.
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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?
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Low cost - Strontium ferrite is inexpensive and the wet molding process is relatively simple. This makes them cheaper than rare-earth magnets.
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Dimensional consistency - The compression molding process allows for close dimensional tolerances and uniform magnet shapes to be produced consistently.
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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.
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Resistance to corrosion - Being fully dense ceramic materials, they are not prone to corrosion like bonded magnets containing additives.
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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
How Xinheng fabricates its permanent strontium ferrite magnet?
FERRITE POWDER GRADE OF MOTORCYCLE MOTORS MAGNET
| Grade |
Br(mT) |
Hcb(KA/m) |
Hcj(KA/m) |
(BH)max(KJ/m3) |
| mT |
Gs |
KA/m |
Oe |
KA/m |
Oe |
KJ/m3 |
MGOe |
| Y33 |
410-430 |
4100-4300 |
220-250 |
2760-3140 |
225-255 |
2830-3200 |
31.5-35.0 |
3.9-4.4 |
| Y33H |
410-430 |
4100-4300 |
250-270 |
3140-3390 |
250-275 |
3140-3450 |
31.5-35.0 |
3.9-4.4 |
| Y33H-2 |
410-430 |
4100-4300 |
285-315 |
3580-3960 |
305-335 |
3830-4200 |
31.8-35.0 |
4.0-4.4 |
| Y34 |
420-440 |
4200-4400 |
200-230 |
2510-2890 |
205-235 |
2570-2950 |
32.5-36.0 |
4.1-4.4 |
| Y35 |
430-450 |
4300-4500 |
215-239 |
2700-3000 |
217-241 |
2730-3030 |
33.1-38.2 |
4.1-4.8 |
| Y36 |
430-450 |
4300-4500 |
247-271 |
3100-3400 |
250-274 |
3140-3440 |
35.1-38.3 |
4.1-4.8 |
| 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 |
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