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Neodymium iron magnet factory introduces the magnetic size arrangement

There are also several types of magnets. If we arrange them according to their magnetic force, they are neodymium iron boron powerful magnets, samarium cobalt magnets, alnico magnets, and ferrite magnets. So what are the main factors that affect the magnetic size of the magnet? Let's talk about it in detail below.

There are mainly the following three performance parameters to determine the performance of the magnet: remanence Br, coercivity Hc, magnetic energy product BH.

Remanence Br: After the permanent magnet is magnetized to technical saturation and the external magnetic field is removed, the Br retained by the neodymium iron boron strong magnet is called the residual magnetic induction.

Coercive force Hc: To reduce the B of the permanent magnet magnetized to technical saturation to zero, the required reverse magnetic field strength is called magnetic coercive force, or coercive force for short

Magnetic energy product BH: represents the magnetic energy density established by the magnet in the air gap space (the space between the two magnetic poles of the magnet), that is, the magnetostatic energy per unit volume of the air gap. Since this energy is equal to the product of the Bm and Hm of the magnet, it is called the magnetic energy product.


Powerful magnet

Magnet products have a magnetic field, surface magnetism, diamagnetism, and paramagnetism.

Surface magnetic field: the magnetic induction intensity at a specified position on the surface of the permanent magnet.

Diamagnetism: Diamagnetism is a kind of magnetic phenomenon that causes a weak repulsive force to the magnetic field when it is in an external magnetic field.

Paramagnetism: refers to the magnetic state of a material. Some materials can be affected by an external magnetic field and produce characteristics that refer to the magnetization vector of the same phase. Such substances have positive magnetic susceptibility, and the opposite phenomenon of paramagnetism is called diamagnetism.

 When purchasing magnet products, buyers can choose their own magnet products according to their needs. The magnetic materials are different, and the price is also different. Nowadays, neodymium iron boron powerful magnets are also used as the most widely used magnetic material.

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