Magnetic field: The space that produces a magnetic effect on the magnetic poles is a magnetic field. High-quality Permanent Magnet manufacturers tell us that it has the following properties: 1. Magnets are magnetic and can attract iron objects.2. Magnets have magnetic poles, and each magnet has two magnetic poles, N pole and S pole, which exist in pairs.3. When a ferromagnetic material is magnetized, it is easy to lose its magnetic properties, so it is called a temporary magnet (for example: iron); when a ferromagnetic material is magnetized, it is not easy to lose its magnetic property, which is called permanent Magnet (for example: steel).4. When two magnets are close to each other, the same magnetic poles will repel each other and push away, and different magnetic poles will attract and stick to each other. So: the same poles repel each other and the opposite poles attract each other. Magnets are composed of atoms such as iron, cobalt, nickel, etc. The internal structure of the atoms is special and they have a magnetic moment. Magnets can generate magnetic fields and have the property of attracting ferromagnetic materials such as iron, nickel, cobalt and other metals. There are mainly the following 3 performance parameters to determine the performance of neodymium iron boron magnets:Remanence Br: After the permanent magnet is magnetized to technical saturation and the external magnetic field is removed, the retained Br is called the residual magnetic induction.Coercive force Hc: To reduce the B of the permanent magnet magnetized to technical saturation to zero, the strength of the reverse magnetic field that needs to be added is called the 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.
