Product Overview & Application Fields
This high remanence cube magnet offers powerful performance in a small footprint, making it highly versatile for autonomous vehicle applications. Its miniaturized design enables seamless integration into space-limited systems such as LiDAR sensors, precision motors, and control units. Despite its size, it delivers strong, stable magnetic force to ensure reliable functionality under demanding conditions. Engineered for efficiency and durability, this magnet enhances the accuracy, safety, and responsiveness of next-generation self-driving technologies.
Technical Specifications
|
Product Name |
high remanence cube magnets |
|
Magnet Grade |
N35 (Br ≥11.8 kGs, Hcj ≥12 kOe) |
|
Dimensional Tolerance |
+/-0.05 |
|
Operating Temperature |
≤80°C (High-temp versions available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
3,500 Gs |
|
Magnetic Flux |
2.0 mWb (Fluxmeter-tested) |
Manufacturing Process
Raw Material Preparation
High-purity rare earth Neodymium (Nd), Iron (Fe), Boron (B), and selected alloying elements (such as Dysprosium or Terbium for high-temperature grades) are carefully weighed according to precise composition formulas. Strict control of chemical purity is essential to ensure consistent magnetic properties.
Vacuum Melting and Strip Casting
The prepared raw materials are melted in a vacuum induction furnace to prevent oxidation. The molten alloy is then rapidly solidified using a strip casting process, forming thin alloy flakes with uniform microstructure. This step ensures homogeneity and improves subsequent magnetic performance.
Hydrogen Decrepitation (HD)
The cast alloy flakes undergo hydrogen decrepitation, where hydrogen gas penetrates the alloy and causes it to fracture into coarse powder. This process improves powder brittleness and prepares the material for fine milling while maintaining magnetic integrity
Jet Milling
The coarse powder is further refined into micron-sized particles using high-pressure jet milling in an inert gas environment. Precise control of particle size distribution is critical for achieving high coercivity and optimal magnetic alignment.
Packaging & Transportation
- Magnets are packaged in accordance with international transportation standards.
- Magnetic field strength is controlled through shielding and spacing when required.
- Inner and outer packaging structures are designed to ensure safe air, sea, or land transport.
- Clear labeling is applied for identification, traceability, and handling instructions.
- Packaging configurations can be customized to meet IATA, IMDG, or customer-specific requirements.
FAQ
Q1: What do N, M, H, SH, UH grades mean?
A: These grades indicate the magnet's maximum operating temperature.
N: up to 80°C
M: up to 100°C
H: up to 120°C
SH: up to 150°C
UH: up to 180°C
Higher temperature grades have better thermal stability but slightly lower magnetic strength.
Q2: Does a higher grade always mean a stronger magnet in application?
A: Not necessarily. Higher grades provide higher intrinsic magnetic properties, but actual performance depends on shape, size, air gap, and working environment. Proper magnetic circuit design is critical.
Q3: What is the difference between Br, Hc, and BHmax?
A:Br (Remanence): Magnetic flux density after magnetizatio
Hc / Hcj (Coercivity): Resistance to demagnetization
BHmax: Maximum energy product, indicating overall magnetic power
All three must be considered when selecting a magnet.
Contact Us
Phone / WhatsApp / WeChat: +86 13829120676
Email: Info@jinconn.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong Province, China
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