Location:
Home >
News >
Company News Types of magnets Date: 【2019-12-23】 / View: 【2370】Times
There are many kinds of magnets. It is generally divided into two categories: permanent magnet and soft magnet. What we call a magnet generally refers to a permanent magnet. Permanent magnet can be divided into two categories:
The first category:
Metal alloy magnets include NdFeB magnets \ SmCo magnets, AlNiCo magnets
The second category: ferrite permanent magnet 1, neodymium iron boron magnet:
It is currently the most magnetic magnet, known as the king of magnetism, with extremely high magnetic properties. Its maximum magnetic energy product is more than 10 times higher than that of ferrite. The machinability of NdFeB is very good. The maximum operating temperature is 200 ℃. And hard, stable performance, has a good cost performance, so it is widely used in various industries. However, because of its strong chemical activity, it is necessary to coat its surface. (such as Zn, Ni, epoxy, etc.).
2. Ferrite magnet:
Its main raw materials include BA0 or sr0 and Fe203. It is made by ceramic technology. It is hard and brittle. Because of its good temperature resistance, low price and moderate performance, ferrite magnet has become the most widely used permanent magnet.
3. Alnico magnet:
It is an alloy composed of aluminum, nickel, cobalt, iron and other trace metal elements. The casting process can be processed into different sizes and shapes with good machinability. Casting alnico permanent magnet has the lowest reversible temperature coefficient, and the working temperature can be as high as 600 ℃. Alnico permanent magnet products are widely used in various instruments and other applications. ?
4. Samarium cobalt. Because of the high price of its materials, its development is limited. As rare earth permanent magnet, SmCo not only has high magnetic energy product, reliable coercive force and good temperature characteristics. Compared with NdFeB magnets, SmCo magnets are more suitable for working at high temperature.
Service Hotline0755-27155185
