Samarium–cobalt magnet is a kind of Rare-earth magnet. It is a kind of magnetic tool material made of samarium, cobalt and other metal rare earth materials through proportioning, melting into alloy, crushing, molding and sintering. It has high magnetic energy product, extremely low temperature coefficient, and the maximum operating temperature can reach 350 ℃. Negative temperature is unlimited. When the operating temperature is above 180 ℃, its maximum magnetic energy product (BHmax) The coercivity, temperature stability, and chemical stability all exceed those of neodymium iron boron permanent magnet materials. Has strong corrosion resistance and oxidation resistance; So it is widely used in aerospace, national defense and military industry, microwave devices, communication, medical equipment, instruments, various magnetic transmission devices, sensors, magnetic processors, motors, magnetic cranes, etc. The maximum magnetic energy product (BHmax) of Samarium–cobalt magnet ranges from 16 MGOe to 32 MGOe, and its theoretical limit is 34 MGOe. The Samarium–cobalt magnet has two composition ratios, namely (samarium atom: cobalt atom) 1:5 and 2:17.

Production process of Samarium–cobalt magnet: batching → smelting and ingot making → milling → molding → sintering and tempering → magnetic testing → grinding → pin cutting → finished products.

These alloys are usually processed in a non magnetized state. Samarium cobalt is finely ground using wet grinding (water-cooled heat dissipation) and diamond grinding wheels. This process is necessary if drilling or other functional limitations exist. Grinding waste must not be completely dried, as samarium cobalt has a low ignition point. A small spark, if produced with static electricity, can easily burn. The temperature generated by a fire can be very high and difficult to control