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Permanent Ferrite Magnets That Provide Power In Small Household Sweeping Robots
Permanent ferrite magnets are applied in sweeping robots:
These motors typically adopt a multi-pole ring-shaped magnet
design, such as injection-molded ferrite rings with 8-pole,
16-pole, 24-pole or 32-pole magnetization in the axial direction.
This design can provide a stable magnetic field for the motor,
thereby achieving efficient and stable power output and ensuring
that the sweeping robot can maintain good motion performance on
various terrains.
In the navigation system of the sweeping robot, permanent ferrite
materials also play an important role. Hall induction magnetic
rings are a common application form. They are installed on the
walking wheels of sweeping robots to sense changes in the magnetic
field, thereby achieving real-time monitoring of the robot's
position and motion state
Our company manufactures an-isotropic ceramic strontium ferrite
magnet made by means of wet compression molding.
What is permanent magnet ferrite?
Permanent magnet ferrite is a hexagon structure compound with
uniaxial anisotropy, mainly barium, strontium, lead three kinds of
ferrite and their composite solid solution, there are the same
magnetic and opposite magnetic points, because this kind of ferrite
material in the external magnetization field disappeared, still can
retain a strong constant remanent magnetic property for a long
time, can be used to generate a stable magnetic field on the
external space.
How to determine the performance of the product?
There are four main indicators to measure the performance of
permanent magnet materials: residual magnetism, coercive force,
intrinsic coercive force, and maximum magnetic energy product,The
finished permanent magnet ferrite has a high coercivity and is not
easy to demagnetize after magnetization.
What are the advantages of the permanent magnet ferrite we produce?
1,Stable magnetic properties: permanent magnet ferrite has high
coercivity and remanence, stable magnetic properties, and is not
easily affected by external influences.
2,High temperature resistance: permanent magnet ferrite has good
high temperature resistance and is suitable for use in high
temperature environment.
3,High temperature coefficient of resistance to saturated magnetic
field: The magnetic properties of permanent magnet ferrite decay
slowly at high temperatures, with a high temperature coefficient of
resistance to saturated magnetic field.
4,Low cost: The raw material price of permanent magnet ferrite is
low, the production process is simple, and the cost is relatively
low.
5,Long service life: permanent magnet ferrite has a long service
life, is not easy to demagnetize, low maintenance costs.
6,Good rare earth substitution: permanent magnet ferrite can
replace some rare earth magnets, reduce the dependence on rare
earth and reduce the consumption of rare earth resources.
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:
FERRITE POWDER GRADE OF MOTORCYCLE MOTORS MAGNET
| 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 |