Permanent magnet permanent magnet may be a natural product, known as lodestone, also be made artificially produced (the strongest magnets are NdFeB magnets) having a wide hysteresis loop, high coercivity, high remanence, a magnetized i.e., to maintain a constant magnetic material. Also known as permanent magnetic materials, hard magnetic materials. Applications ferrite rings, permanent work in magnetic Switzerland and the depth of the magnetic saturation magnetization loops of the second quadrant demagnetization section. Permanent magnets should have as high a coercive force Hc, remanence Br and maximum energy product (BH) m, in order to ensure maximum magnetic energy storage and stable magnetic properties. Permanent magnets are widely used in electronic, electrical, mechanical, transportation, medical and household items and the like. Such as speakers, telephone receiver permanent magnets; Magnetoelectric meter magnetic system; generator pole permanent magnet motor; machinery used in manufacturing permanent magnet devices (such as a permanent magnet chuck surface grinder, etc.) and suspension system, magnetic bearings ; magnetic separation systems, magnetic beneficiation, magnetic water purification system ferrite bead size, magnetron, proton accelerator magnetic system. How to shield the magnetic field? Generally, we use an ordinary iron magnetic shield. Require high permeability magnetic shielding material, to meet this requirement is an iron-nickel alloy material of high conductivity ferrite bead, this material has a high magnetic permeability. When the need to shield the magnetic field is strong, with only a single layer shielding materials ferrite bead Quote not reach the shielding requirements, it is the saturation will occur. In this case, one method is to increase the thickness of the material. However, a more effective method is to use a combination of shielding, a shielding body in another shield, leaving an air gap between them. You can fill any non-permeability material of the air gap support, such as aluminum. Shield in shielding effectiveness is much higher than single shield, thus shield in a magnetic field can be attenuated to a very low level. Ferrite bead size, the new Xin Tong magnetic ferrite ring provided by the Dongguan City, Tong Xin magnetic Limited. Dongguan City, Tong Xin magnetic Limited (www.dgxtxmagnet.com/) Dongguan, Guangdong, magnetic leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. New Tong Xin magnetic leadership with the staff warmly welcome all inquiries to discuss, with new magnetic Xin Tong better future.