Linear Motor Magnetic Assembly Guide A Linear Motor Magnetic Assembly is an important magnetic component in a permanent magnet linear motor. It usually consists of multiple NdFeB magnets arranged according to a specific magnetic pole arrangement, pole pitch, and magnetization direction. The magnets are assembled with a steel back iron, yoke, or other support structures [...]
What is Eddy Current Losses in Permanent Magnet Materials? Understanding and Minimizing Eddy Current Losses in SmCo and NdFeB Magnets Eddy current losses are a significant concern in rotating machinery, especially when using metal-based permanent magnets like Samarium-Cobalt (SmCo) and Neodymium-Iron-Boron (NdFeB). Core losses, which include both eddy current losses and hysteresis losses, must be [...]
Exchange Spring Magnet An exchange spring magnet is a magnetic material with high coercivity and high saturation properties derived from the exchange interaction between a hard magnetic material and a soft magnetic material, respectively. Coehoorn et al. were the first able to observe an actual exchange spring magnet.[1] Exchange spring magnets are cheaper than many [...]
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 [...]
Super Strong Neodymium Magnets are found in the commercialization of the highest powerful performance magnets, known as the magnetic king, with a high maximum magnetic energy product (BHmax) higher than the ferrite (Ferrite) 10 times.Mechanical processing properties of its own some very good.Operating temperature up to 200 degrees Celsius.And its hard texture, stable performance, good [...]
How Are Samarium Cobalt Magnets Made SmCo magnets are rare earth magnets with high magnetic energy product and extremely low-temperature coefficient. Its maximum operating temperature can reach 350°C. When working at a temperature above 180℃, its maximum magnetic energy product (BHmax), coercivity, temperature stability, and chemical stability all exceed those of the NdFeB magnet. But [...]
Select Material Grades for Neodymium Magnets When you are trying to figure out which neodymium magnets to select for your design needs, you would always see the term “grade” or “N rating” from any supplier or manufacturer. Besides a few other criteria, desired material grade must be defined for a neodymium magnet. So, what does [...]
Select Magnet Materials from MPCO Magnets ( Neodymium, NdFeB Magnets, SmCo, Alnico, Ceramic Magnets and others ) When choosing a magnet material to be incorporated into your specific application, their properties need to be identified and compared to correctly evaluate their functional workability and economic feasibility. Design engineers should consider the magnetic requirement, physical requirement, [...]