Product Overview & Application Scenarios
Nickel-plated permanent high-strength neodymium disc magnets
These industrial grade high quality disc magnets offering a powerful and compact magnetic solution for home projects, including creating magnetic fixtures, organising tools, or securing lightweight items. In the professional world, they are crucial in manufacturing, engineering, and product design, where their magnetic strength and precision are essential for holding and positioning small components. Furthermore, they are used in the energy sector, particularly in the development of renewable energy devices, where their magnetic force contributes to efficient operation. These magnets are utilised across various industries, making them a reliable choice for both consumers and businesses.
Technical Parameters
|
Product Name |
High quality disc magnets |
|
Magnetic Grade |
N42 (Br ≥ 13.5 kGs, Hcj ≥ 12 kOe) |
|
Dimensions |
D - 8mm x 5mm (customizable) |
|
Dimensional Tolerance |
Length ±0.05mm, Width ±0.05mm, Thickness ±0.05mm |
|
Operating Temperature |
≤80°C (high-temp version available) |
|
Density |
≥7.5 g/cm³ |
|
Surface Magnetic Field |
2450 ±200 Gauss (measured with TM-801 Gauss meter) |
|
Magnetic Flux |
2.3 mWb (measured with fluxmeter) |
Manufacturing Process
The product is manufactured using a precision grinding process specifically developed for sintered NdFeB magnets, ensuring dimensional accuracy, surface quality, and stable magnetic performance.
- High-speed, high-precision grinding equipment is utilized to achieve tight dimensional tolerances and consistent geometry.
- A controlled coolant system is applied throughout the grinding process to effectively dissipate heat, minimize internal stress, and prevent surface damage.
- Strict process control ensures smooth surfaces, clean edges, and minimal material defects.
As a result, the finished magnets meet stringent quality and performance requirements, making them suitable for demanding applications in motors, sensors, electronic devices, and aerospace components.
Frequently Asked Questions:
Q1:How does temperature affect NdFeB magnet performance?
Answer:NdFeB magnets are sensitive to temperature. Excessive heat can cause irreversible demagnetization. Selecting appropriate grades (e.g. H, SH, UH, EH) is critical to ensure stable performance within the operating temperature range.
Q2:What surface coatings are commonly used for NdFeB magnets?
Answer:Common coatings include Nickel-Copper-Nickel (NiCuNi), Zinc (Zn), Epoxy, Phosphate, and Parylene, chosen based on corrosion resistance requirements and operating environment.
Q3:Why are NdFeB magnets brittle and prone to chipping?
Answer:NdFeB magnets are produced by powder metallurgy and sintering, resulting in a hard but brittle microstructure. Mechanical impact or improper handling can easily cause cracking or chipping.
Q4:Usage Precautions?
Storage and Maintenance Guidelines
Store magnets in dry, well-ventilated conditions.
Separate magnets using plastic or cardboard spacers during transport.
Inspect coatings regularly for damage or corrosion.
Keep magnets shielded during shipping to meet safety and regulatory requirements.
Clean magnets with dry or soft materials only
♦ Phone/WhatsApp/WeChat: +86 180 3822 5893
♦ Email: sales@jinconn.com
♦ Website: www.jinconnmagnet.com
♦ Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong, China
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