What is difference between Samarium cobalt and Alnico magnet

Common ground: Both belong to high temperature-resistant permanent magnets. Among them, the working temperature of Alnico magnet can reach up to 550℃, the maximum working temperature of samarium cobalt 1:5 type is 250℃, and the maximum working temperature of samarium cobalt 2:17 is 350℃; Both do not require surface treatment (except for use in special […]

The principle of Geophone magnet

A geophone is a highly sensitive ground motion transducer that converts ground movement (velocity) into voltage, which may be recorded at a recording station. The deviation of this measured voltage from the baseline is called the seismic response and is analyzed for the structure of the earth, which has been used by seismologists and geophysicists […]

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 […]

How Strong is Neodymium Magnet?

Magnet is one of the most common items in our daily life. It has a wide range of applications and can be used in industry, manufacturing, electronic products, etc. Magnets can be divided into two categories, namely permanent magnets and non-permanent magnets, and permanent magnets can be natural magnetite or artificially made magnets. Among all […]

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 […]

Application of Neodymium Magnet in Healthcare Field

Neodymium magnets are a powerful type of magnet that led to their use in many modern technologies, as well as in the fields of medicine and dentistry, particularly, on body systems, tissues, organs, diseases, and treatment. Neodymium magnets are incorporated in medical devices for example in magnetic resonance imaging devices to diagnose and treat chronic […]

Application principle of magnet in speedometer

A speedometer or a speed meter is a gauge that measures and displays the instantaneous speed of a vehicle. Now universally fitted to motor vehicles, they started to be available as options in the 1900s, and as standard equipment from about 1910 onwards. Speedometers for other vehicles have specific names and use other means of […]

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 […]

How to choose the right magnetizing direction for different shapes of magnet?

In many applications in life, the orientation of the magnet’s poles may not matter – as long as the magnet attracts where it is needed. In other cases, however, the directionality of the magnet is an important component of the intended application. Understanding the conventional and specialized magnetization directionality options available helps to ensure successful […]