SDM Magnetics Co., Ltd.
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SDM Magnetics Co., Ltd. products
Magnet - Sintered Neodymium Magnet - Standard-shaped Magnet
SDM Magnetics - Neodymium Arc Magnet for Motors and Generators
Neodymium arc magnets, a subtype of sintered Neodymium magnets, are vital components in the manufacture of permanent magnet motors, generators, and magnetic coupling devices. As powerful rare earth magnets, they are primarily used for rotor and stator applications, where their distinct curved shape is integral to efficient electromagnetic operation. Machining these magnets involves techniques like wire-cutting and copy grinding, both having distinct advantages and limitations in terms of efficiency and cost. The magnets are often radially or axially magnetized for use in specific motor configurations like radial flux and axial flux motors. For enhanced performance, such as reducing eddy current losses and improving magnetic field distribution, laminated arc magnets or Halbach arrays may be implemented. These advancements can mitigate cogging torque and optimize motor operation despite the technical challenges in manufacturing.
SDM Magnetics - Neodymium Block Magnet
Neodymium block magnets are composed of neodymium, iron, boron, and minor elements, forming a class of rare earth permanent magnets. They are available in diverse dimensions, grades, and coatings, and are typically defined by their Length (L) x Width (W) x Thickness (T). The first two dimensions ascertain the size of the pole face, while the last defines the magnetization direction, indicating the distance from the North to the South pole. Block magnets are categorized into shapes such as rectangular, slab, cube, and square based on these dimensions. Their operating temperatures fluctuate depending on the material grades, making them suitable for various applications. These magnets are well-regarded for their strong magnetic properties and versatility in engineering and industrial applications, often utilized in motors, sensors, and magnetic assemblies.Magnet - Samarium Cobalt Magnet - Standard-shaped Magnet
SDM Magnetics - Model v - Magnet for High Temperature Applications
Samarium Cobalt (SmCo) magnets are a type of rare earth permanent magnet composed of an alloy of Samarium, Cobalt, and Iron. These magnets are notable for their excellent resistance to oxidation and corrosion and for possessing a high Curie temperature, making them suitable for use in high-temperature environments. SmCo arc magnets find extensive use in high-temperature permanent magnet motors, generators, and magnetic coupling devices due to their exceptional temperature stability, surpassing that of more commonly used sintered Neodymium magnets. Manufactured through the powder metallurgy process, SmCo magnets exhibit mechanical anisotropy as a result of the magnetic orientation of their crystal structure during production. This leads to them being qualitatively hard and brittle. Therefore, particular care is required during machining to prevent fractures. There are two main types, SmCo5 and Sm2Co17, with the former being somewhat easier to machine. Production primarily involves sophisticated wire-cutting and grinding techniques.
Model Samarium Cobalt Block - Magnet for Aerospace and Automotive Applications
Samarium Cobalt (SmCo) block magnets, identified as the second generation of rare earth permanent magnets, consist primarily of samarium, cobalt, and iron. These magnets can be categorized into two types: SmCo 1:5 and SmCo 2:17, each differing in composition. The SmCo block magnet is defined by its dimensions of length, width, and thickness, with the thickness dictating the magnetization direction. These magnets exhibit remarkable resistance to corrosion, oxidation, high temperatures, and demagnetization, outperforming many other types of permanent magnets, including sintered neodymium magnets. Due to these properties, SmCo block magnets are extensively utilized in aerospace, automotive, and military sectors, where reliability under extreme conditions is critical. Their efficacy is further supported by their ability to maintain performance in high-stress environments, making them a preferred choice for demanding applications.Magnetic Assemblies
