Description of NdFeB Block Magnets
NdFeB block magnets are a type of neodymium iron boron magnet that has been shaped into a block or rectangular form. These magnets are known for their high magnetic strength and are used in a wide variety of applications due to their strong and durable magnetic properties.
Manufacturing Process of NdFeB block magnets
Powder Metallurgy: High-purity rare earth metals (Nd, Pr), Fe, and B → Alloy Melting → Jet Milling → Pressing → Sintering → Hydrogen Crushing → Finished Magnet.
Heat Treatment: Annealing is typically performed at 1100°C to optimize grain size and residual stress.
Standard Surface: Pickled and polished, surface roughness Ra ≤ 0.8 μm.
Functionalization: Electroplating (e.g., nickel, zinc) and coating (e.g., PTFE) can be applied to enhance corrosion and wear resistance.
Features of NdFeB block magnets
Shape: Block magnets are rectangular or cuboid in shape, with dimensions that can vary widely depending on the intended application. They can range from very small for use in electronic devices to large for industrial applications.
Strength: NdFeB block magnets are among the strongest permanent magnets available, with high levels of remanence and coercivity.
Material: They are made from an alloy of neodymium, iron, and boron, which is then coated with materials like nickel, zinc, or epoxy to protect against corrosion.
Temperature: These magnets have a maximum operating temperature that can be up to 150°C, depending on the grade and treatment. Hightemperature grades are available for applications requiring operation at elevated temperatures.
Applications of NdFeB block magnets
1. Automotive: Used in various automotive applications, including sensors and electric motors.
2. Electronics: Common in electronic devices where a strong, compact magnetic field is needed, such as in hard drives and speakers.
3. Industrial: Employed in industrial applications like material handling, lifting, and sorting systems.
4. Consumer Products: Found in everyday items like magnetic locks, latches, and holders.
5. Medical: Used in medical devices and equipment that require precise magnetic fields.
Specification of NdFeB block magnets
|
Grade |
BrmT(KG) |
bHc KA/m(KOe) |
iHc KA/m(KOe) |
(BH)maxKJ/m³ |
Tw.℃ |
|
(MGOe) |
|||||
|
N35 |
1170-1220(11.7-12.2) |
≥868( ≥10.9) |
≥955(≥12) |
263-287(33-36) |
80℃ |
|
N38 |
1220-1250(12.2_12.5) |
≥899( ≥11.3) |
≥955 ( ≥12) |
287-310(36-39) |
80℃ |
|
N40 |
1250-1280 (12.5-12.8) |
≥907 ( ≥11.4) |
≥955 ( ≥12) |
302-326(38-41) |
80℃ |
|
N42 |
1280-1320(12.8-13.2) |
≥915( ≥11.5) |
≥955 ( ≥12) |
318-342(40-43) |
80℃ |
|
N45 |
1320-1380(13.2-13.8) |
≥923 ( ≥11.6) |
≥955 ( ≥12) |
342-366(43-46) |
80℃ |
|
N48 |
1380-1420(13.8-14.2) |
≥923( ≥11.6) |
≥955 ( ≥12) |
366-390(46-49) |
80℃ |
|
N50 |
1400-1450(14.0-14.5) |
≥796( ≥10.0) |
≥876( ≥11) |
382-406(48-51) |
60℃ |
|
N52 |
1430-1480(14.3-14.8) |
≥796( ≥10.0) |
≥876 ( ≥11) |
398-422(50-53) |
60℃ |
Testing and Quality Control of NdFeB Block Magnets
FAQ for NdFeB Block Magnets
Are you an NdFeB Block Magnets factory or an NdFeB Block Magnets manufacturer?
A: Yes, we are an NdFeB Block Magnets factory, but we generally use our trading company to handle the business abroad. It will be more convenient to receive the remittance and arrange the shipment.
What is the delivery method of NdFeB Block Magnets?
A: Generally, we send NdFeB Block Magnets by UPS, DHL, or FedEx. Also, we can send by sea to a seaport or by air to the closest airport.
Why is your NdFeB Block Magnet so cost-effective?
A: We cut out the middlemen in the end-to-end manufacturing process, and we obtain raw material directly from its source.
Do you do spot quality inspection of NdFeB Block Magnets or full inspection of NdFeB Block Magnets?
A: 100% full inspection for sure. All unqualified NdFeB Block Magnets are discarded.
How do you ensure your lead time for NdFeB Block Magnets?
A: From material preparation to machining and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.
What is the MOQ of NdFeB Block Magnets?
A: Depends on the quantity of NdFeB Block Magnets; generally, no MOQ limit.
How to pay for NdFeB Block Magnets?
A: A bank transfer (T/T) will be acceptable.
What is the delivery time of NdFeB Block Magnets?
A: Around 7-20 days, which depends on the quantity and production of NdFeB Block Magnets.
What kind of package of NdFeB Block Magnets is it?
A: Generally, we use a carton case or a plywood case with protective material inside to ensure the safety of the NdFeB Block Magnets.
What is the lead time of NdFeB Block Magnets?
A: From the order placed to cargo receiving will take around 10-25 days.
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