Hengdian Dongyang City, Kim Dae magnetic factory ---- how to shield or guiding magnetic field? Ferromagnetic materials can be used to shield the magnetic field, generally we use an ordinary iron. It should be noted that the thickness of the iron NdFeB magnet manufacturers address, if the thickness of reach, the iron in magnetic saturation, can only shield part of the field NdFeB magnets, the magnetic field lines emanating still be part of. The key guiding magnetic field forming a magnetic circuit that the choice of materials and the appropriate size and shape of the high permeability, reduce quality NdFeB magnetic flux leakage, that magnetic circuit yoke and pole pieces reasonable configuration. Common magnetic Hengdian Kim factory ----- soft magnetic materials magnetic energy parameters saturation magnetization Bs: its size depends on the composition of the material, it corresponds to the physical state of the material inside the magnetization vector is aligned. Residual magnetic flux density Br: is the hysteresis loop characteristic parameters Which strong NdFeB magnets, H back to 0:00 of B values. Squareness ratio: Br / Bs coercive force Hc: the amount of material is magnetized degree of difficulty, depending on the material composition and defects (impurities, stress, etc.). Permeability μ: is the ratio of the hysteresis loop at any point in the corresponding B and H, and closely related to the device operation status. Which strong NdFeB magnets _ Kim Dae-magnetic Factory (certification) _ Beijing NdFeB magnets are provided by large magnetic Hengdian gold plant. Hengdian Dongyang City, Kim Dae-magnetic Factory (www.jjdct.cn) is an industry leader in Jinhua, Zhejiang, electronics, electrical products manufacturing equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . In the Kim Dae-magnetic plant leadership with the staff warmly welcome all inquiries negotiations to create a large magnetic plant gold better future.