SM-03152027 Ring Ndfeb Magnet coated NiCuNi
Features
High Magnetic Performance: NdFeB magnets are the strongest commercially available permanent magnets, with energy products (BHmax) ranging from 35 to 55 MGOe (N35 to N55 grades). This high magnetic strength enables compact and efficient designs in various applications, including electric motors, wind turbines, and automotive systems. For instance, an N42-grade ring NdFeB magnet with a diameter of 30mm and height of 20mm can generate a surface field exceeding 3,000 Gauss, making it suitable for high-torque motor applications.
NiCuNi Coating for Enhanced Corrosion Resistance: The NiCuNi coating consists of a nickel-copper-nickel triple-layer structure, providing superior protection against oxidation, humidity, and chemical corrosion compared to single-layer nickel coatings. This coating extends the operational lifespan of the magnets, even in harsh environments such as marine or automotive settings. For example, a NiCuNi-coated ring NdFeB magnet used in marine sensors maintains performance after prolonged exposure to saltwater, thanks to the corrosion-resistant properties of the NiCuNi layer.
Thermal Stability: High-grade NdFeB magnets (e.g., N42SH or N52EH) retain performance up to 150–200°C, making them suitable for applications involving elevated temperatures, such as electric vehicle traction motors or industrial generators. The NiCuNi coating also aids in thermal management by dissipating heat generated during high-speed operation, preventing demagnetization.
Customization Options: Manufacturers offer tailored solutions for ring NdFeB magnets, including varying diameters, heights, magnetizations (axial or radial), and coatings (e.g., epoxy for additional chemical resistance or gold for electronic connectors). For instance, a medical imaging device might use a custom-sized ring NdFeB magnet with a black epoxy coating to minimize glare in MRI machines.
Mechanical Versatility: The ring shape facilitates secure mounting on shafts or rods, enabling precise alignment and rotation in applications such as robotics, conveyor systems, and magnetic bearings. The hole in the center also reduces weight without significantly compromising magnetic strength, optimizing efficiency in weight-sensitive applications like aerospace components.
Applications
· Automotive: Electric power steering systems, hybrid vehicle motors, and anti-lock braking systems (ABS) rely on ring NdFeB magnets for precise torque control.
· Renewable Energy: Wind turbine generators use large-scale ring NdFeB magnets to convert rotational energy into electricity efficiently.
· Consumer Electronics: Headphones, loudspeakers, and smartphone vibrators leverage their compact size and strong magnetic fields.
· Industrial Automation: Magnetic grippers, conveyor systems, and robotic arms utilize these magnets for reliable part handling.
Product Details
Introduction
Ring NdFeB (Neodymium-Iron-Boron) magnets coated with NiCuNi (Nickel-Copper-Nickel) represent a specialized category of high-performance permanent magnets. These magnets combine the exceptional magnetic properties of neodymium-iron-boron alloys with the enhanced durability and corrosion resistance provided by the NiCuNi coating. Ring-shaped NdFeB magnets are widely used in applications requiring precise magnetic field control, mechanical alignment, or integration with shafts and sensors, such as in motors, generators, and magnetic couplings.