What is a SmCo magnet?

Samarium cobalt magnet (SmCo magnet) is a kind of rare earth magnet. It is made of samarium, cobalt and other metal rare earth materials through mixing, smelting into alloy, crushing, pressing, and sintering. It has a high magnetic energy product. , Very low temperature coefficient, the highest working temperature can reach 350℃, and the negative temperature is not limited. When the working temperature is above 180℃, its maximum magnetic energy product (BHmax), coercivity (coercivity), temperature stability and chemical stability All surpass NdFeB permanent magnet materials. It has strong corrosion resistance and oxidation resistance; so it is widely used in aerospace, national defense and military industry, microwave devices, communications, medical equipment, instruments, meters, various magnetic transmission devices, sensors, magnetic processors, motors, magnetic cranes Wait. The maximum energy product (BHmax) of samarium cobalt magnets ranges from 16 MGOe to 32 MGOe, and its theoretical limit is 34 MGOe.

Samarium cobalt magnets are mainly composed of metal samarium, cobalt, iron and other trace elements mixed with high performance samarium cobalt 1:5 and samarium cobalt 2:17 permanent magnets. The maximum working temperature can reach 300°C, and the melting temperature can reach 1300°C. It has strong anti-corrosion and anti-oxidation ability, and generally does not need coating protection. Since samarium cobalt magnets are very fragile, they need to be handled carefully when packaging.

Samarium Cobalt 1:5

Samarium cobalt 1:5 magnets generally contain more than 30% samarium and a large amount of cobalt. The magnetic energy product ranges from 18MGOe to 22MGOe. Generally, the reversible temperature coefficient is -0.05%/°C, and the maximum operating temperature is 250°C.

Samarium Cobalt 2:17

Samarium cobalt 2:17 magnets contain 13-17 transition metal elements in addition to large amounts of samarium and cobalt. The transition metal elements are rich in cobalt, but also contain other elements such as iron, copper, zirconium, hafnium, etc. Better heat resistance effect. The magnetic energy product ranges from 24MGOe to 30MGOe. Generally, the reversible temperature coefficient is -0.03%/°C, and the maximum operating temperature is 300°C.

Processing of Samarium cobalt magnet (SmCo magnet)

  • The production process of samarium cobalt magnets: ingredients → smelting ingots → powder making → profiling → sintering and tempering → magnetic inspection → grinding processing → pin cutting processing → finished product.

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

China SmCo Magnet Manufacturer www.ymagnet.com supplies smco magnet, samarium cobalt magnet, rare earth smco permanent magnet for scientific experiments or for industrial applications.

This product is not a toy and is not to be used by children. This product is to be used for scientific experiments or for industrial applications. This product contains strong Neodymium magnet(s) that can be harmful or fatal if swallowed. Strong Neodymium magnets are fragile, they are brittle and will break or chip if they hit a hard surface or are snagged together. Always use the utmost care when handling Neodymium magnets.

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