The maximum energy product is a measurement for the maximum amount of magnetic energy stored in a magnet. It is the maximally attainable product of flux density B and field strength H for a material.
Simply put, the maximum energy product is an indicator of magnet strength. You can either use a small magnet with a higher energy product or a large magnet with a lower energy product for the same application.
The maximum energy product of grossista magneti super magnets can be viewed in the physical magnet data table.
During the 20th century, the maximum energy production of commercially available magnetic materials rose from about 1 MGOe (for example in KS steel) to over 50 MGOe (in neodymium magnets). Other important permanent magnet properties include remanence (Br) and coercivity (Hc); these quantities are also determined by the saturation loop and are related, but not directly, to the maximum energy product.
To predict the performance of a magnet in a specific application, other magnetic properties of the magnet material and the physical geometry of the magnet must be known. Predicting performance is beyond the scope of this article, but the geometry of the magnet is relevant to the discussion of the maximum energy product.
The maximum energy product or (BH)max of a magnet is an energy density that corresponds to the area of the largest rectangle that can be engraved under the normal curve.
It is also the vertex of a parabola, consisting of the product of the points that make up the normal curve (magnetic induction and field strength) and the field strength.
(BH)max is a volume-independent magnetic feature, which means that small and large magnets made from the same ND-48 NdFeB magnet alloy will have the same (BH)max despite the magnetic field or flux they produce very differently. The maximum energy product or (BH)max is achievable for a particular pole section when the magnet is operated at the highest induction level (Gaussian) and the smallest volume. A larger magnet volume produces a larger magnetic field and more flux, although the magnet may not work at (BH)max.
For two magnets with the same size, the same number of poles, and the same magnetizing voltage, the magnet with a higher magnetic energy product can obtain a higher surface magnetism. Magnet suppliers believe that at the same (BH)max value, the levels of Br and Hcj have the following effects on magnetization:
(1) Br is high and Hcj is low: under the same magnetizing voltage, higher surface magnetism can be obtained;
(2) Br is low and Hcj is high: to obtain the same surface magnetism, a higher magnetizing voltage is required.
3. What does the maximum magnetic energy product of magnet product grades represent?
(1) The number in the NdFeB magnet grade represents the maximum magnetic energy product of the product. For example, 38 and 45 in N38 and N45SH represent the maximum magnetic energy product of the product of 38MGOe and 45MGOe. The larger the number, the greater the maximum magnetic energy product ( The letters after the numbers represent the classification of its intrinsic coercivity. The furniture magneti tells you that the further back the letters are, the greater the intrinsic coercivity. For details, please refer to the article on coercivity and intrinsic coercivity).
(2) The grades of samarium cobalt magnets, such as SmCo16, SmCo18, SmCo24, SmCo26, SmCo28, etc., the numbers also represent the typical value of the maximum magnetic energy product of the product.