Permanent Ferrite Magnets Are Widely Used In Various Modern Electrical Appliances And Motors
The intorduce of Variable frequency:
Variable frequency motor is a kind of motor that can adjust the speed and output power according to the need. It controls the frequency and voltage of the power supply through the frequency converter, so as to achieve variable speed operation. Such motors are commonly used in applications where speed needs to be adjusted according to load changes, such as fans, pumps, compressors, and conveyor equipment.
The advantages of variable frequency motor include high efficiency and energy saving, accurate speed regulation, smooth start and stop, and reduce mechanical wear. Because the speed can be adjusted according to the actual demand, it can effectively save energy and extend the life of the equipment.
In the industrial and commercial fields, variable frequency motors are widely used in various industries, such as manufacturing, petrochemical, water treatment, construction and transportation. With the improvement of energy conservation and environmental protection awareness, the application range of variable frequency motors will be further expanded.
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.
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 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.
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.
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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Permanent Ferrite Magnets Are Widely Used In Various Modern Electrical Appliances And Motors Images
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