Author Archives: Tina Gao

Thin NdFeB magnets in smart devices

Small NdFeB Magnets in Smartphones Neodymium (NdFeB) magnets are an invisible part of every smart phone. These tiny magnets are critical to the function of the phone, working quietly behind the scenes inside the phone case.  These internal magnets are typically used in the speaker, receiver, vibration mode motor, taptic feedback motor, and camera auto-focus[…]

Application of Injection Molded Magnet

Injection Molded Magnet One of the more important developments in magnetic materials is injection molded magnet, which has opened a new world of application opportunities. The processing temperatures employed to blend and mold the material mixture are low enough to allow many different magnet powders to be used alone or in combination in the polymer[…]

Permanent Magnet Motor VS. Induction Motor Efficiency

As the name implies, a permanent magnet motor uses permanent magnets on the rotor. The alternating current applied to the stator results in rotation of the rotor. Because the magnets are permanently magnetized, the rotor can run synchronously to the switching AC current. The slippage necessary in induction motors is eliminated, improving your heat efficiency. The[…]

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 and allows 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[…]

How Strong is the 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; permanent magnets can be natural magnetite or artificially made magnets. Among all permanent[…]

Corrosion Resistance of Permanent Magnets

Causes of magnet corrosion 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[…]

Application of Neodymium Magnet in Medical Field

Description for Neodymium Magnet 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 were developed by General Motors and Hitachi in the 1980s. Because it provides[…]

Application Principle of Speedometer Magnet

A magnetic speedometer 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 sensing speed. For[…]

Difference among Surface Gauss, Remanence and Pull Strength

On this magnet industry, you will always see magnets listed with a maximum pull force, remanence and a Gauss rating. So what’s the difference among them? What is Gauss? Surface 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,[…]

Test Methods and Procedures for Permanent Magnet Materials

What is a permanent magnet? There are many permanent magnet materials, such as NdFeB, AlNiCo, SmCo, Ferrite magnet. In general, when we test magnets, we will detect their surface magnetism, magnetic flux and magnetic distance, etc. For different permanent magnet materials, the test methods are usually as follows: Flux Density Test (Gaussmeter) The surface flux[…]