1. What are the types of magnets?

Classified by attributes: neodymium iron boron magnets (strong magnets), ferrite magnets, samarium cobalt magnets, aluminum nickel cobalt magnets, and iron chromium cobalt magnets.

Classified by shape: circular magnet, square magnet, tile magnet, irregular magnet, cylindrical magnet, etc.

2. Which type of magnet has the best magnetic properties?

The answer is neodymium iron boron strong magnets, which belong to the third generation rare earth permanent magnets and are also known as strong magnets or magnetic kings. Its magnetic performance is much higher than that of ferrite, aluminum nickel cobalt, and samarium cobalt magnets, making it the most cost-effective magnet to date.

3. Maximum operating temperature of magnets made of different materials

The maximum operating temperature of different magnets varies. Generally speaking, the maximum operating temperature of a magnet refers to the irreversible loss of permanent magnet magnetism beyond this temperature. Ferrite permanent magnet 450 ℃, neodymium iron boron 310 ℃, samarium cobalt 750 ℃, aluminum nickel cobalt 850 ℃.

4. How long is the lifespan of a permanent magnet?

In theory, the lifespan of a permanent magnet is permanent, but the actual working environment is different from the experiment. There are two main factors that affect the lifespan of magnets: corrosion and demagnetization. Like neodymium iron boron magnets, they are easily corrosive magnetic materials that require electroplating and surface anti-corrosion treatment. If not treated with anti-corrosion, it may quickly oxidize and even turn into powder.

Another convenience is demagnetization, as demagnetization of a permanent magnet can affect its service life, and even if it is magnetized again, it may not achieve its previous performance.

5. Common processing techniques for magnets

Common processing methods include wire cutting, grinding, chamfering, electroplating, drilling, etc.

6. What material is a magnet made of?

There are many types of magnets, and the composition materials of different types of magnets are also different. The main component of common ferrite magnets is Fe3O4, while neodymium iron boron magnets mainly consist of neodymium, iron, boron, and other rare earth metals such as dysprosium (Dy) and praseodymium (Pr). The main components of samarium cobalt magnets are rare earth samarium, cobalt, iron, copper, and zirconium. Aluminum nickel cobalt permanent magnet is an alloy composed of aluminum, nickel, cobalt, iron, and other trace metal elements.

7. What are the functions and functions of permanent magnets

Magnets are widely used, such as permanent magnet motors, sensors, speakers, generators, magnetic therapy, hardware toys, and so on.