Ceramic Button Disc Ferrite Magnet
Ferrite disc magnets factory supplier;
1) Cheapest magnet material
2) Good anti-corrosion performance, no need to surface treatment.
3) Best temperature stability
4) Best choice for industrial application
5) All shapes can be customized
6) provide isotropic and anisotropic
- Information
Professional China Manufacturer Permanent Ferrite disc Magnets
Ferrite disc magnets are round coin-shaped ceramic ferrite magnets of varying diameter and thickness. The ferrite disc magnets are almost always manufactured as axially magnetised ceramic ferrite magnets. The thickness of the magnet is how axially magnetised magnets are Our ferrite disc magnets would be supplied as axially magnetised ferrite disc magnets unless we state otherwise.
Ferrite disc magnets can be fixed in place using adhesive or can be pushed into circular drilled holes in wood or plastic. Ferrite as a material has a very good resistance to corrosion and has a high maximum operating temperature making it a very versatile magnetic material. Ferrite disc magnets are commonly used in fridge magnets and for craft making.
Advantages
1) Low cost, high energy.
2) Good anti-corrosion performance, no surface treatment needed.
3) Excellent temperature stability.
4) provide isotropic and anisotropic.
5) Good electrical insulation, excellent demagnetization resistance
6) High coercivity, high resistance, long-term stability, economic price
7) Best choice for industrial application.
Machining and tolerances
Machining must be performed with a diamond wheel, preferably before magnetization. Standard tolerances are +/-.005” for ground dimensions and +/- 2% of feature size for sintered dimensions. Due to their brittle nature, ferrite disc magnets will not withstand impact or flexing. They are also not recommended to be used as structural components in assemblies. Ceramic disc magnets are chemically inert non-conductors, which is a benefit in many applications but eliminates the use of the EDM process to produce samples or special shapes.
Temperature constraints and methods of magnetization
Due to Ceramic’s positive temperature coefficient of Hci high temperatures are not generally a major concern with respect to irreversible magnetic loss. Low temperatures, however, pose a much greater risk for permanent demagnetization. For example, a ceramic 5 grade with a permeance coefficient of 1 will start to experience permanent losses below -20°C.
Grade | Value(min/typical in our factory) | |||||||
Br | Hcb(BHC) | Hcj(IHC) | (BH)max | |||||
MT | KG | KA/m | Koe | KA/m | KOe | Kj/m^3 | MGOe | |
Y10T(=C1) | 200/218 | 2.00/2.18 | 125/145 | 1.57/1.82 | 210/250 | 2.64/3.14 | 6.5/8.0 | 0.8/1.0 |
Y25 | 360/370 | 3.60/3.70 | 135/150 | 1.70/1.88 | 140/170 | 1.76/2.14 | 22.5/25.3 | 2.8/3.2 |
Y30(=C5) | 380/385 | 3.80/3.85 | 191/210 | 2.40/2.64 | 199/220 | 2.50/2.51 | 26.0/28 | 3.4/3.7 |
Y30BH | 380/390 | 3.80/3.90 | 223/235 | 2.80/2.95 | 231/245 | 2.90/3.08 | 27.0/30.0 | 3.4/3.7 |
Y33 | 410/420 | 4.10/4.20 | 220/235 | 2.77/2.95 | 225/240 | 2.83/3.01 | 31.5/33.0 | 4.0/4.2 |
Y35 | 400/410 | 4.00/4.10 | 175/195 | 2.20/2.45 | 180/200 | 2.26/2.51 | 30.0/32.0 | 3.8/4.0 |
C8(=C8A) | 385/390 | 3.85/3.90 | 235/255 | 2.95/3.20 | 242/265 | 3.05/3.33 | 27.8/30.0 | 3.5/3.7 |
C10 | 400/410 | 4.00/4.10 | 288/300 | 3.62/3.77 | 280/287 | 3.51/3.60 | 30.4/31.9 | 3.8/4.0 |
Application
Ferrite disc magnets are great for use in many applications, which include use as motor magnets, sensor magnets, hobby magnets, craft magnets, consumer electronics magnets, and speaker magnets. Ceramic magnets can operate in high temperature applications where a strong magnetic field is not needed.
FAQ:
Q1. What are the advantages of ceramic button disc ferrite magnets?
A1. Ceramic button disc ferrite magnets are cost-effective, have good temperature stability, and are resistant to demagnetization.
Q2. What are the disadvantages of ceramic button disc ferrite magnets?
A2. Ceramic button disc ferrite magnets have lower magnetic strength compared to other types of magnets and are relatively brittle, which makes them more susceptible to cracking under stress.
Q3. Can ceramic button disc ferrite magnets be customized?
A3. Yes, ceramic button disc ferrite magnets can be customized in terms of their size, shape, and magnetic strength to suit specific applications.
Q4. What is the temperature range for ceramic button disc ferrite magnets?
A4. Ceramic button disc ferrite magnets can operate in temperatures up to 250°C (482°F).
Q5. How are ceramic button disc ferrite magnets stored and handled?
A5. Ceramic button disc ferrite magnets should be stored away from other magnets and electronic devices that could be affected by their magnetic fields. They should also be handled with care to avoid cracking or chipping.
Q6. What are the safety precautions for ceramic button disc ferrite magnets?
A6. Ceramic button disc ferrite magnets are generally safe to handle, but precautions should be taken to avoid getting them close to electronic devices, pacemakers, or other medical devices that could be affected by their magnetic fields.
