Rare Earth Magnet Manufacturing Process There are several processes for making magnets, but the most common method is called Powder Metallurgy. In this process, a suitable composition is pulverized into fine powder, compacted and heated to cause densification via “liquid phase sintering”. Therefore, these magnets are most often called sintered magnets. Ferrite, Samarium Cobalt (SmCo) [...]
Magnet Manufacturing Process: From Raw Material to Finished Magnet In today's technology, magnets are in everything from refrigerator magnets/advertising magnets to speakers and sophisticated medical devices. But how are these powerful metals made? Today we explain how magnets are made step by step. Step 1: Choosing materials The choice of suitable material is the first [...]
5 Tips Introduction of NdFeB Magnet Production Process 1. Forming orientation: Process introduction: The function of orientation is to turn the easy magnetization direction c-axis of chaotically oriented powder particles to the same direction to obtain the maximum remanence. The main purpose of compaction is to crush the powder into a certain shape and size, [...]
How are Sintered Samarium Cobalt Magnets Made? Developed in the early 1960’s, samarium Cobalt magnets have been a highly preferred application choice as a type of rare earth permanent magnet material. Samarium cobalt magnet compositions are primarily samarium and cobalt with small amounts of iron, copper, zirconium depending on the material grade. The powerful sintered [...]
Rare Earth Sintered Neodymium Multipole Ring Magnets Radial ring sintered magnet, a neodymium magnet manufactured, and its magnetic fields could be aligned in different directions then “normal” neodymium ring magnets. Under the manufacturing process several different magnetic fields can be created in a single ring, and in several directions. Radial neodymium rings makes it possible to [...]
Rotor magnet shaping technologies for permanent magnet electrical machines Engine torque ripple is essential for the comfort of vehicle passengers. Large torque ripple may result in a harsh driving experience. Moreover, additional noise and vibration are byproducts of torque ripple. The service life of the machine and attached components can be influenced by severe vibrations. [...]
Permanent Magnet Appearance 1, Can customers specify appearance requirements? Yes. MPCO MAG was founded upon the ideology of custom solutions. We encourage customers to specify mechanical and/or appearance requirements. Of course, if no customer-specific standards are stated, MPCO adheres to its own Permanent Magnets Workmanship and Appearance Standard. 2, Does MPCO Magnetic Technologies have standards [...]
How Neodymium Magnets are Made The method for manufacturing Neodymium Iron Boron magnets is as follows: MELTING OF THE ALLOY UNDER VACUUM The Neodymium metal element is initially separated from refined Rare Earth oxides in an electrolytic furnace. The Neodymium, Iron and Boron and the other chemical elements are weighted and put in a vacuum [...]
Permanent Magnets Markets and Devices / Applications Devices • Electromechanical machines and devices e.g. motors, generators, actuators • Acoustic transducers e.g. speakers, earphones, ringers • Mechanical force and torque devices e.g. holding, lifting, clutches • Microwave and ion beam control e.g. TWT’s, particle accelerators • Conversion of external stimuli to electrical signal e.g. sensors • DC field generation e.g. MRI Markets and Industries • Automotive and transportation • Industrial and commercial • Consumer products • Military and aerospace • Medical Permanent Magnets Markets and Devices Applications Sensors/Encoders Hall Effect Encoder for end of shaft applications. Available as either absolute or incremental encoders they can provide digital position, analog position, and quadrature speed outputs. Capable of rotational speeds over 20k RPM. Hall IC used for this application uses a diametrically magnetized magnet. Hall Effect through‐shaft encoder. Requires use of Hall IC capable of off‐axis sensing using multipole bonded magnet. Low cost, speed or position sensors typically seen in automotive applications – Cam position, crank position, engine speed, ABS. This type of sensor can be designed for either face or lateral sensing applications and may, in addition to the Hall IC, incorporate a magnet if sensing a metal target or a pole piece if sensing an encoder multipole magnet. What is the best permanent magnet material and process? •It depends; on the weight/space limitations, application operating conditions, operating parameters of the magnetic circuit, annual quantity, device assembly mechanization etc. • Despite have lower flux output bonded magnets can offer advantages over sintered magnets for many applications. • Despite lack of breakthrough in new materials over the last 30 years there are several promising developments in bonded magnets on the horizon. • [...]