Hard Permanent Magnet Ferrite Ring Sintered At High Temperature For
13 Hours
Company profile
The company boasts the first domestically developed servo
fully-automatic wet press oil press machine and the first
dual-track roller kiln in the nation. It also possesses the
capability for independent design, development, and processing of
various types of molds.
The primary business of the company focuses on sintered ferrite
permanent magnet components, encompassing automotive motors,
motorcycle motors, general machinery motors, household appliance
motors, household fan motors, variable frequency motors, water pump
motors, and more. These products are widely used in the automotive,
motorcycle, office equipment, power tools, household appliances,
and fitness equipment industries.
The role of permanent magnet ferrite in starting motor of
motorcycle:
Permanent magnet ferrite plays a key role in motorcycle starting
motor. the principle of motorcycle power generation is based on the
principle of electromagnetic induction. By the interaction between
the magnetic pole and the coil rotated by the motorcycle generator,
mechanical energy is converted into electrical energy. The
rectifier then converts the AC electrical signal into a
unidirectional current signal, providing the required direct
current to the motorcycle. The stable operation of the generator
can be achieved by an electronic regulator.
What is permanent magnet ferrite?
Permanent magnet ferrite has a very high magnetic energy product
and coercivity, it can produce a large magnetic field and magnetic
force under a small size and weight, while having a high magnetic
temperature coefficient and thermal stability, can maintain stable
magnetic properties at higher temperatures. This makes the
permanent magnet ferrite still able to work normally in a high
temperature environment and is not easy to lose magnetism. Good
corrosion resistance and wear resistance, so that it is not easily
affected by the external environment and damage.
What's the application of Xinheng's Permanent magnets?
Xinheng mainly manufactures the following types of ceramic arc
segment magnets: Motors and power generation equipment: Permanent magnet ferrite has
a wide range of applications in motors, generators and transformers
and other equipment, which can improve the efficiency and
performance of equipment.
Magnetic sensors: Permanent magnet ferrites can be used to
manufacture magnetic sensors to measure magnetic field strength and
direction, which are widely used in automotive, aerospace and
industrial fields.
Electronic equipment: Permanent magnet ferrite materials can be
used to manufacture electronic components, such as filters, power
inductors and memory components, and are widely used in
communications, power and consumer electronics.
Medical equipment: Permanent magnet ferrite can also be used in
medical equipment, such as nuclear magnetic resonance imaging
equipment and medical magnetic therapy.
Environmental protection technology: Permanent magnet ferrite can
also be used in environmental protection technology fields, such as
sewage treatment equipment and environmental protection sensors.
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 feature of ceramic strontium Permanent Magnets 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.
- Particle shape - The strontium ferrite powder used typically has a
hexagonal platelet morphology which helps promote magnetic
an-isotropy during molding and sintering.
- 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.
FERRITE POWDER GRADE OF UNIVERSAL 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 | | Y30H-1 | 380-400 | 3800-4000 | 230-275 | 2890-3460 | 235-290 | 2950-3640 | 27.0-32.5 | 3.4-4.1 | | 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 | | Y35 | 430-450 | 4300-4500 | 215-239 | 2700-3000 | 217-241 | 2730-3030 | 33.1-38.2 | 4.1-4.8 |
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