Samarium Cobalt magnets are rare earth magnets composed of samarium, cobalt, and other rare earth metal alloys. They are produced through a process of blending, melting, crushing, molding, and sintering, resulting in a magnetic material with high energy product and low temperature coefficient. These magnets can operate at temperatures up to 350°C with no limitations in sub-zero temperatures. Above 180°C, their energy product (BHmax), coercivity, temperature stability, and chemical stability exceed those of neodymium-iron-boron permanent magnets. They exhibit excellent corrosion and oxidation resistance, making them widely used in aerospace, microwave devices, communication, instruments, gauges, various magnetic drive systems, sensors, magnetic processors, motors, and magnetic cranes. The energy product (BHmax) of samarium cobalt magnets ranges from 16 MGOe to 32 MGOe, with a theoretical limit of 34 MGOe. There are two composition ratios for samarium cobalt magnets: 1:5 (Samarium: Cobalt) and 2:17.

Samarium Cobalt Magnet Production Process: Blending → Casting → Powdering → Shaping → Sintering & Annealing → Magnetic Testing → Machining → Cutting → Finished Product.

These alloys are typically processed in a non-magnetized state. Sintered neodymium-iron-boron magnets are processed using wet fine grinding (water-cooled cooling) and diamond grinding wheels. This process is necessary if drilling holes or for other functional limitations. Grinding waste must not be completely dry, as sintered neodymium-iron-boron magnets have a low ignition point. Even a small spark, such as that produced by static electricity, can easily ignite. The temperature of the fire can be extremely high and difficult to control.