Type of Customized Neodymium Magnet

Neodymium magnets are a type of rare earth permanent magnetic material and are the strongest type of magnet available. Made from an alloy of neodymium, iron and boron with a Nd2Fe14B tetragonal crystalline structure, they have the highest maximum energy product of any permanent magnetic material. Neodymium magnets are also more resistant to demagnetization than other permanent magnetic materials.

Magnets are essential to virtually every aspect of modern life and technology. Bunting has developed an extensive portfolio of magnetic technologies and solutions, and is fully capable of engineering a custom magnetic solution to meet specific application requirements. Our team has in-depth knowledge of all aspects of the magnet supply chain and can design a magnet to fit your needs, from concept to production, regardless of industry or application.

Depending on the use and environmental conditions, neodymium magnets can last up to 10 years or more without losing more than 1% of their original magnetic field. However, the lifetime of the magnet can be significantly reduced if exposed to high temperatures, magnetic field interference or radiation. To ensure that neodymium magnets maintain their original magnetic properties, the magnets must be properly protected, which includes using a nickel coating to reduce corrosion.

The best way to ensure that your magnets are protected is to encapsulate them in a strong, durable metal such as aluminum or copper. This will help to prevent the magnets from attracting other materials such as steel, iron or nickel, and will also protect them from damage. In addition to the protection provided by the protective metal, neodymium magnets should be kept away from high-temperature areas or any other source of heat.

There are several ways to produce neodymium magnets, including sintering, bonding and injection molding. Sintered neodymium magnets have the advantage of providing the greatest possible magnetic force for the lowest cost. This is accomplished by sintering the neodymium powder in an inert gas or vacuum to densify it. The resulting magnet has a high magnetic energy product and coercivity, and is relatively free of distortion and noise.

Sintered neodymium magnets can be produced in a variety of shapes and sizes, including arcs, rods, blocks, discs, rings, cylinders, sheets, blocks and custom parts. The manufacturing process can be adapted to suit specific applications, and a range of coatings is available to further improve performance and durability.

The optimum coating for a particular application is determined by examining the environment, physical and chemical properties, temperature ranges, and the polarity of the magnetic fields required. In addition to nickel, other commonly used coatings include zinc, tin, aluminum and epoxy. Coatings can be applied either by spraying or brushing.