NdFeB Surface Treatment - Passivation Coating The role of NdFeB permanent magnet surface protection has three aspects: 1- Improve the corrosion resistance of NdFeB, and use various surface protections to resist corrosion such as humid environments, acids, alkalis, salts and harmful gases; 2- Thoroughly clean the surface of the magnet, such as removing loose magnetic [...]
Can NdFeB Absorb Objects 600 Times Its Own Weight? Not Exactly Magnets can pick up heavy objects. It is said on the Internet that NdFeB magnets can pick up objects 600 times their own weight. Is this accurate? Is there a formula for calculating magnet attraction? Today, I will tell you about the "attractive force" [...]
Radiation Ring Magnet Sintered NdFeB magnetic ring is a new product developed in recent years. It is mainly used in high-performance permanent magnet motors and sensors. In the application of permanent magnet motors, sintered NdFeB magnetic tiles are usually bonded into a ring, which has natural disadvantages: Since the processing of the tile-shaped magnet belongs [...]
Eddy Current Loss of Rare Earth Permanent Magnet Both samarium cobalt and neodymium iron boron are metal materials. Due to the good electrical conductivity of metal materials, the resistivity is very low. This is not a good thing for rotating machinery such as motors, because it will bring eddy currents to rotating machinery Loss, causing [...]
Magnetic Materials in Voice Coil Motors (VCM) Voice coil motor, VCM is a special form of direct drive motor, which can directly convert electrical energy into linear motion mechanical energy. The principle is to put a cylindrical winding in a uniform air gap magnetic field, and the winding generates a magnetic field. , Drive the [...]
Magnetic Materials in Loudspeakers (Horns) The core component responsible for producing sound in audio equipment is the loudspeaker, commonly known as the horn, whether it is a stereo or a headset, this key component is indispensable. The loudspeaker is a transducer device that converts electrical signals into acoustic signals. The performance of the loudspeaker has [...]
Sintered NdFeB Weight Loss Test (HAST, PCT) Sintered NdFeB permanent magnets are the magnetic materials with the highest magnetic properties discovered so far, and are widely used in wind power generation, new energy vehicles, maglev trains, intelligent robots and other fields. Sintered NdFeB magnet adopts powder metallurgy process, and the raw materials contain highly active [...]
Magnetic Materials in Linear Motors Linear motor is a kind of transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion. It can be regarded as a rotating motor that is radially dissected into a plane (that is, a rotating motor is flattened, and works the same). Linear motors [...]
MP Materials begins construction of magnetics plant, cements supply agreement with GM MP Materials has begun construction on its previously announced rare earth metals, alloys and magnet manufacturing facility in Fort Worth, Texas, marking a significant return to magnet manufacturing in North America. The company said that it will invest US$700 million in the next [...]
SOFT MAGNETIC POWDER VS LAMINATE MATERIAL for Electric Motor Efficiency Which is easier to trust -- a 1,300-component assembly with shaky performance, or a 10-component one with reliable data? Many manufacturers have worked with the standard, stamped lamination steels for decades. Engineers know the obstacles associated with them, and they accept them as law. But [...]
Bonded Nd-Fe-B Magnets Bonded Nd-Fe-B magnet have very high dimensional accuracy, magnetic uniformity and consistency. It can be made into complex shapes which are difficult to be realize on sintered Nd-Fe-B magnet, and it is easy to integrate with other metal or plastic parts. Bonded Nd-Fe-B magnet is characterized by a variety of magnetization methods, [...]
Sintered NdFeB Magnets Composition and Microstructure Sintered NdFeB Magnets Composition Sintered NdFeB magnet contains three essential elements: rare earth neodymium, iron and boron. Nd atoms, coupling with ferromagnetic Fe atoms, help the magnet obtain high remanence Br and maximum energy product (BH)max, which makes it extraordinary compared with other permanent magnets. Although B element has [...]