What Is The Maximum Energy Product Of A Magnet? Magnet Supplier Here To Introduce!

There are four main indicators to measure the performance of magnet products: remanence, coercivity, intrinsic coercivity and maximum magnetic energy product.

Maximum magnetic energy product (BH)max represents the magnetic energy density established by the magnetic pole space of the magnet, that is, the magnetostatic energy per unit volume of the air gap, which is the maximum value of the product of B and H (unit kJ/m3 or GOe), and its size directly indicates the performance of the magnet.

1. The magnetic energy product curve of the magnet: the product BH of the magnetic induction intensity B and the magnetic field intensity H at any point on the demagnetization curve of the magnet is called the magnetic energy product, and its size is proportional to the magnetic energy density of the magnet in a given working state. Magnet suppliers believe that the curve of the relationship between magnetic energy product and magnetic induction intensity B is called magnetic energy product curve, which is based on the product of B and H values on the demagnetization curve of the magnet as the horizontal coordinate, and the magnetic induction intensity B as the vertical coordinate.

2. The relationship between the maximum magnetic energy product and magnet performance:

Two magnets of the same size, the same number of poles and the same magnetizing voltage condition, the magnet with high magnetic energy product has a high surface magnetic field. Magnet suppliers believe that at the same (BH)max value, the level of Br and Hcj has the following effects on magnetization:

(1) Br high Hcj low: under the same magnetizing voltage, can get a higher surface magnetic;

(2) Br low Hcj high: To obtain the same surface magnetic, a higher magnetizing voltage is required.

3.What does the magnet product brand in the maximum magnetic energy product represents?

(1) The number in the Ndfeb magnet brand represents the maximum magnetic energy product of the product, such as N38, N45SH 38 and 45 represent the maximum magnetic energy product of the product is 38MGOe and 45MGOe, the larger the number, the greater the maximum magnetic energy product (the letter after the number represents its inherent coercive force classification, The more backward the letter indicates the greater the intrinsic coercivity, see Coercivity and Intrinsic Coercivity for details).

(2) The grade of samarium cobalt magnet, such as: SmCo16, SmCo18, SmCo24, SmCo26, SmCo28, etc., where the number also represents the typical value of the maximum magnetic energy product of the product.

The maximum magnetic energy product of the magnet, one of the indicators of the performance of the magnet, is introduced here. If you have doubts, please consult the magnet supplier!