Product Overview
These strong U-shaped NdFeB magnets are engineered to improve magnetic circuit efficiency in applications requiring controlled flux flow and concentrated magnetic force. The U-shaped geometry directs magnetic flux across a defined air gap, reducing magnetic loss and enhancing torque output compared to standard block magnets.
Material Neodymium (NdFeB)
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Product Name |
strong U-shaped magnets |
|
Magnetic Grade |
N42 (Br ≥ 13.5 kGs, Hcj ≥ 12 kOe) |
|
Thickness |
L12mm x 6mm x 4mm |
|
Dimensional Tolerance |
Length ±0.05mm, Width ±0.05mm, Thickness ±0.05mm |
|
Magnetisation Direction |
Axially Magnetised |
|
Operating Temperature |
≤80°C (high-temp version available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
3800 ±200 Gauss (measured with TM-801 Gauss meter) |
|
Magnetic Flux |
2.3 mWb (measured with fluxmeter) |
Manufacturing Process
● Raw Material Preparation
High-purity rare earth elements, iron, and boron are carefully selected and proportioned to ensure stable chemical composition and magnetic performance.
● Melting and Alloying
The raw materials are melted in a vacuum or inert gas environment to form a homogeneous NdFeB alloy, ensuring consistency and minimizing oxidation.
● Strip Casting / Rapid Solidification
The molten alloy is rapidly cooled to form thin alloy flakes, improving grain structure and preparing the material for further processing.
Packaging Procedure
Magnets are separated with non-magnetic materials to prevent impact and chipping
Moisture-resistant packaging and desiccants are used to protect surface coatings
Inner cushioning materials reduce vibration during transportation
Magnetic shielding is applied when required to meet transport regulations
Usage Precautions
Avoid magnet impact, bending and sudden mutual attraction
Keep away from sensitive electronics and magnetic media
Do not exceed the rated operating temperature
Store in a dry environment to prevent corrosion
After-Sales Service
For application-critical industries such as motors, automation, medical devices, and magnetic assemblies, we offer targeted after-sales support.
Motor applications: assistance with thermal margin validation and long-term stability
01
Automation systems: support for continuous operation and interference resistance
02
Medical devices: enhanced consistency control and reliability-oriented support
03
Magnetic assemblies: holding force validation and structural optimization guidance
04
Service depth is adjusted according to application risk and reliability requirements.
05
FAQ
Q1. How is repeatability ensured across multiple reliability test cycles?
Repeatability is ensured through calibrated equipment, standardized test procedures, and controlled environmental conditions.
Q2. How are changes in material or process validated?
Any material or process change triggers re-validation testing, including magnetic, mechanical, and environmental reliability evaluations.
Q3. How does grain boundary diffusion (GBD) improve magnet performance?
GBD enhances coercivity by diffusing heavy rare earth elements into grain boundaries rather than the entire magnet, improving temperature resistance while reducing rare earth consumption and cost compared to bulk doping.
Contact Us：
Phone/WhatsApp/WeChat: +86 13829120676
Email: lena@jinconn.com
Website: www.jinconnmagnet.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China
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