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Performance and selection method of magnet

The application of strong magnetism is more extensive in many magnets, so relatively speaking, the wholesale price of strong magnetism will also be different. The following is a brief introduction to the types of magnets, hoping to bring you some help. 1. Types of magnets Magnets should be called Magnets, English Magnet. Magnets are now divided into two categories, one is soft magnetic and the other is permanent magnets; soft magnetics include silicon steel sheets and soft magnetic cores; hard magnets include aluminum Nickel-cobalt, samarium cobalt, ferrite, and neodymium-iron-boron, the most expensive of which is samarium-cobalt magnetic steel, the cheapest is ferrite-magnetic steel, the highest-performance is neodymium-iron-boron magnetic steel, but the most stable performance, temperature The best coefficient is Al-Ni-Co magnetic steel. Users can choose different hard magnetic products according to different needs. 2. How to define the performance of a magnet? There are three main performance parameters to determine the performance of a magnet:
 
Remanence Br: After the permanent magnet is magnetized to technical saturation and the external magnetic field is removed, the remaining Br is called the residual magnetic induction intensity. Coercive force Hc: The B of the permanent magnet magnetized to technical saturation is reduced to zero. The required reverse magnetic field strength is called magnetic coercive force, which is referred to as 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 static magnetic energy per unit volume of the air gap. Because this energy is equal to the product of Bm and Hm of the magnet, it is called magnetic energy product. Magnetic field: The space that produces a magnetic effect on a magnetic pole is a magnetic field. Surface magnetic field: The magnetic induction intensity at a specified position on the surface of a permanent magnet. 3. How to choose a magnet? Before deciding which kind of magnet to choose, it should be clear what kind of role the magnet is required to play. Main role: moving objects, fixing objects or lifting objects. Desired magnet shape: wafer shape,
 
Circular, square, tile or special shape. Required magnet size: length, width, height, diameter and tolerance, etc. Required magnet attraction, expected price and quantity, etc. Xiamen everbeen Co., Ltd. is a high-tech enterprise specializing in the research and development, production and sales of rare earth permanent magnet materials, magnetic devices, magnetic tools and related products. The company has passed ISO9001 system certification, and produces and sells rare earth permanent magnet products with various performances and shapes. In addition, the company relies on its extensive experience in magnetic material machining and strong production capacity, is committed to the development, production and sales of magnetic components and magnetic tools, to provide customers with high-quality magnetic components and magnetic tool products. At present, our company's NdFeB permanent magnet materials and magnetic components have been widely used in machinery processing, electro-acoustics, motors, instruments, automatic control, wind power generation, luggage, toys, craft jewelry and other fields. We are willing to develop together with customers at home and abroad and create a better future with a sincere attitude.

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