Product Overview
Industrial use high remanence disc magnets are made by rare earth permanent magnetic materials composed primarily of Neodymium (Nd), Iron (Fe), and Boron (B), manufactured via high-precision sintering processes. These high remanence disc magnets exhibit excellent magnetic properties, high energy product (BHmax), and structural diversity. They are widely used in motors, sensors, speakers, medical devices, automation equipment, and renewable energy systems. The ring-shaped structure allows for easy assembly, controlled magnetic flux direction, and improved magnetic circuit efficiency-ideal for hollow mounting or axial magnetic field design applications.
Technical Specifications
|
Product Name |
High remanence disc magnets |
|
Magnet Grade |
N40 (Br ≥ 13.2 KGs, Hcj ≥ 10.8 KOe) |
|
Product Dimension |
D24-D12*2 |
|
Tolerance |
Outer Diameter ±0.05mm, Thickness ±0.05mm |
|
Working Temperature |
≤80 (customizable for high-temperature versions) |
|
Density |
≥ 7.5g/cm³ |
|
Magnetic Field Strength |
2900 GS |
|
Magnetic Flux |
2.9 mWb (measured with fluxmeter) |
Surface Treatment and Coating Technology
To improve this high remanence disc magnets'corrosion resistance and surface quality, the following surface treatments are used:
• Default Coating: Ni-Cu-Ni triple-layer coating (customizable)
• Coating Thickness Standard: Ni (3μm) + Cu (5μm) + Ni (4μm) - customizable upon request
• Optional Coatings: Gold or silver coatings offer excellent conductivity and corrosion resistance
• Degreasing: Organic solvent or alkaline solution cleaning to remove surface oil for optimal adhesion in subsequent treatments
Reliability Testing
- Salt Spray Test: Evaluates corrosion resistance of coating in salt mist environment
- Thermal Shock Cycle Test: Assesses structural integrity and coating adhesion under drastic temperature changes
- Magnetic Performance Consistency Test: Ensures surface gauss, remanence, and flux uniformity using gaussmeters and fluxmeters
- Tensile/Bonding Strength Test: Measures adhesive strength for glued or bonded applications to prevent detachment from vibration or aging
Packaging Process
In accordance with magnetic product transport requirements, we adopt professional packaging methods:
★ Eliminate non-conforming items (appearance or dimensional defects)
★ Magnetize and neatly arrange qualified products
★ Box and label per customer requirement
★ Vacuum packaging with anti-magnetic shielding and cushioning pads
★ Inner boxes placed in outer cartons - moisture-proof, shock-proof, and anti-magnetic interference
★ Custom packaging available
Application Fields
Widely applied in:
• Motors & Generators: BLDC motors, wind turbines, stepper motors
• Electronics & Sensors: Magnetic sensors, speakers, earphones
• Medical & Research Devices: MRI machines
• Emerging Fields: Wireless charging, magnetic levitation systems
Customization and Services
We support a wide range of customization services:
• Dimensions, shape, coating (layers, thickness, color)
• Pole orientation and magnetic strength
• Laser logo engraving or serial number marking
• Encapsulation solutions and suction force testing for special applications
♦ We are pleased to offer free customized magnet solutions tailored to your specific needs.
Please contact us for free samples, magnet customization solutions, and MSDSRoHS, ISO 9001, QC080000, IATF 16949, ISO 14001, ISO 27001 or other relevant certificates!
We're here to help!
Phone/WhatsApp/WeChat: +86 13829120676
Email: info@jinconn.com
Website: www.jinconnmagnet.com
Address: Xiaohe Industrial Zone, Daojiao Town, Dongguan City, Guangdong, China
Hot Tags: high remanence disc magnets, China high remanence disc magnets manufacturers, factory
