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Permanent Magnet Ferrite Used In Air Purifiers For Household Smart Appliances F3027
How the air purifier works?
From the point of view of the working principle of the air
purifier, it is mainly divided into three types: passive, active,
active and passive hybrid.
According to the air purifier for the removal of particles in the
air, there are mainly mechanical filter, electrostatic electret
filter, high voltage electrostatic dust collection, negative ion
and plasma method.
Mechanical filtration
The dust collection method that uses high voltage electrostatic
field to ionize the gas so that the dust particles are charged and
adsorbed to the electrode has small wind resistance but poor effect
on large particles and fibers, which will cause discharge, and it
is difficult and time-consuming to clean, easy to produce ozone and
form secondary pollution.
"High voltage electrostatic dust collection" is a way to ensure
both air volume and adsorption of fine particles. This is the way
that the particles are charged by loading a high voltage before
passing through the filter, so that the particles are "easily
adsorbed" to the filter under the action of electricity.
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 |