Assorted Colors Waterproof Round Magnetic Permanent Office Memo Magnets, Plastic Disc Ceramic Permanent Magnet, Glassboard Magnets, Colorful Plastic Case Round Magnetic Buttons, PP Coating Strong Ferrite Round Magnet, Whiteboards, Planning and Refrigerator Magnets China Supplier Assorted Colors Waterproof Round Magnetic Permanent Office Memo Magnets Specification: Material: ceramic / ferrite and plastic shell casing Size: approx. […]
Motor Arc SmCo Permanent Magnet, High Powerful Samarium Cobalt (Rare Earth) Magnets, High Curie Temperature SmCo BLDC Motor Magnets, SmCo magnetic steel for Servo Motor Step Motor, High Temperature Resistance 200 degrees Halbach Array Magnet
Motor Arc SmCo Permanent Magnet Feature:
Material name: SmCo magnetic steel
Material brand: SmCo5 & Sm2Co17
Working temperature: 250 ~ 300 ℃
Generally, SmCo magnetic steel only has sintered magnetic steel. The production process is mainly cutting and grinding. The specification and size can be customized and processed according to the customer’s requirements. The characteristics of SmCo are high temperature resistance, not easy to oxidize and corrosion resistance. Therefore, most of the general high-temperature motors and aviation products use SmCo magnets.
At present, the price of rare earth materials and high-performance neodymium iron boron materials in China has risen sharply. The price of some high-temperature products of N35EH and n35uh has been much higher than that of SmCo, which can be perfectly replaced by SmCo products at present. Especially for motor products, SmCo tile has higher temperature resistance than NdFeB magnet, and has the same stability as NdFeB material.
This difference between rare earth neodymium magnet (NdFeB) and samarium cobalt magnet. Let’s learn about it with the editor.
The remanence of NdFeB is higher than that of SmCo. At present, it can reach about 55, and SmCo can only reach 32. Remanence, can be simply understood as the suction as the saying goes, NdFeB is much larger, but the coercive force of NdFeB is lower than SmCo. Coercive force is the ability to resist demagnetization.
The temperature factor
|Neodymium 38EH Magnets||Samarium Cobalt R35E Magnets|
|Average torque at
|Average torque at 180°C||1.86Nm||1.99Nm|
The corrosion resistance of NdFeB is not good. Therefore, generally speaking, it is necessary to do electroplating and other protection, and even package anti-corrosion. Common zinc plating, nickel plating, epoxy, etc. Even so, it is not as good as SmCo.
Neodymium iron boron samarium cobalt both are brittle and hard materials and therefore cannot be used in normal machining. General processing methods are wire cutting and diamond blade cutting. So the shape of the product is limited, can not be very complex. Samarium cobalt is relatively brittle. Very easy edge breakage, not resistant to impact. So samarium cobalt has to be assembled with care.
In terms of price, Neodymium iron boron is cheaper than samarium cobalt. At present, most of the market uses more neodymium iron boron. High-speed Motor Arc Samarium Cobalt Laminated Magnet