Category Archives: Magnet Tech

Neodymium Magnets are Used in Aquarium and Saltwater

Neodymium magnets, also known as rare-earth magnets, are indeed used in aquariums and saltwater setups for a variety of purposes. Their strong magnetic properties make them useful in several applications within the hobby, especially in environments where traditional suction cups or adhesives may not be effective due to the harsh conditions. Here are some common […]

What magnets are used in high-speed magnetic rotor assemblies?

high-speed magnetic rotor

HS Magnet manufactures high-performance magnets, magnetic assemblies, precision thin metals, and high-speed magnetic rotor assemblies for highly efficient electric machines. Our engineers work with motor designers every day to optimize their permanent magnet rotor assembly designs. The following magnets are usually used in high-speed magnetic rotor assemblies: NdFeB magnets (Nd-Fe-B) Features: NdFeB is the strongest […]

permanent magnet materials and application selection in Hall sensors

Hall sensors are widely used in position detection, speed measurement, current sensing and other fields. Their working principle is based on the Hall effect, and permanent magnets are used to provide a stable magnetic field source. Different permanent magnet materials are suitable for different application scenarios, so choosing the right permanent magnet is an important […]

Application of permanent magnets in intelligent drones

Have many applications of permanent magnets in intelligent drones.They are widely used in intelligent drones, mainly in the following aspects: 1. Motor (brushless motor) Brushless motors are the core components of modern drone power systems, and the application of permanent magnets in motors is particularly important. Permanent magnet motors use the magnetic field of permanent […]

What is a magnetic levitation train?

A magnetic levitation train, often abbreviated as maglev train, is a type of high-speed train that uses magnetic levitation technology to move. Here is a detailed introduction: Principle of Operation Levitation: Maglev trains rely on the principle of magnetic repulsion and attraction. There are electromagnets on the train and on the guideway. When the appropriate […]

Will permanent magnets rust when exposed to water?

Will permanent magnets rust when exposed to water? Permanent magnets rust? Yes! Although permanent magnets have strong magnetic properties, they are not “invulnerable”. Especially the common NdFeB magnets, whose main component is iron, are easily oxidized and rusted in a humid environment. Why do permanent magnets rust? Material composition: The main component of most permanent […]

How does Magnetic Filtration work?

What is Magnetic Filtration? Magnetic filtration, also known as magnetic separation, is a method that removes iron particles from products that are in liquid or slurry form, allowing for fluid to flow around a magnetic rod or core. This magnet attracts ferrous particles and removes them from the fluid, ensuring that clean fluids are returned […]

Corrosion Resistance of Permanent Magnets

By their very nature, every permanent magnet contains some form of iron. Iron displays the most dramatic ferromagnetic properties of all elements, which is why it is found in the most powerful magnets. However, iron is highly reactive with water and then causes magnets with high iron content very susceptible to corrosion. Other ferromagnetic elements […]

Difference between surface gauss, remanence and pull strength

In this magnet industry, you will always see magnets listed with a maximum pull force, remanence, and gauss rating. So what’s the difference among them? What is Gauss? Gauss is a measure of magnetic induction and a value of density. Simply put, Gauss represents the number of magnetic field lines per square centimeter, emitted by […]

Test Methods and Procedures for Permanent Magnet Materials

Flux Density Test (Gaussmeter) The surface flux density or the flux density at a certain distance from the magnet can be obtained using a Gaussmeter and an Axial or Transverse probe. The probes contain a Hall Effect device whose output voltage is proportional to the flux density. Figures 1a and 1b show the placement and […]