After 13 Hours Of High Temperature Sintering Hard Permanent Magnet
Ferrite W007C
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.
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 MOTORCYCLE MOTORS MAGNET
牌号 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 |
MOTORCYCLE MOTORS MAGNET SPECIFICATION TABLE
No. | Item | R | r | W | L | h | Grade | Application |
| 1 | W118 | 68.1 | 60.7 | 25 | 25 | 7.50 | Y33H | 1KW inverter motor |
| 2 | W018F | 72.5 | 60.7 | 27.9 | 35 | 11.80 | Y40 | 2KW inverter motor |
| 3 | W005A | 72.5 | 60.5 | 29.5 | 42 | 11.80 | Y33H | 2.3KW inverter motor |
| 4 | W050E | 87.3 | 78.5 | 24 | 40 | 8.80 | Y33H | 2.6KW inverter motor |
| 5 | W159 | 74.1 | 65.5 | 28.86 | 47 | 8.60 | Y40 | 2.8KW inverter motor |
| 6 | W017F | 86.5 | 78.5 | 24.0 | 51 | 7.90 | Y33H-2 | 3KW inverter motor |
| 7 | W087 | 86.5 | 78.5 | 24.0 | 64 | 7.80 | Y33H-2 | 5KW inverter motor |
| 8 | W138C | 101 | 90.2 | 24.5 | 65 | 10.8 | Y40 | 7KW inverter motor |
| 9 | W019B | 112 | 100 | 28.5 | 60 | 11.90 | Y40 | 9KW inverter motor |
Introduction Of Motercycle Motor:
A motorcycle motor is an electric motor that drives the wheels of a
motorcycle. It is usually driven by an internal combustion engine
or an electric motor and transmits power to the wheels of the
motorcycle via the drivetrain. The type and performance of
motorcycle motors vary depending on the design and purpose of the
vehicle, and can be a two - or four-stroke internal combustion
engine, or an electric motor in an electric motorcycle. It is an
important part of the motorcycle power system, which directly
affects the performance and driving effect of the vehicle.d to
improve the magnetic properties and stability of permanent magnet
ferrites to meet the needs of magnetic materials in different
fields.
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