Magnetic shielding cover, how to select materials according to the shielding effect + increase the product qualification rate by 11%

The magnetic shield is made of materials for shielding magnetic fields. There are three types of magnetic shielding: magnetostatic shielding, low-frequency electromagnetic shielding and high-frequency electromagnetic shielding. Practically choose different shielding materials according to different situations. The following Xiaoshuo takes everyone to understand how to choose the material of the magnetic shield: Magnetostatic shielding: In order to concentrate the stray magnetic field on the shield shell, the shield should have the highest possible magnetic permeability. All soft magnetic materials with high magnetic permeability, such as electromagnetic pure iron, ductile iron, permalloy, silicon steel, soft ferrite, etc., can be used in principle. The design should be selected according to the requirements of the magnetic screen, price, shell strength, processing performance, etc., after comprehensive consideration. Low-frequency electromagnetic shielding: In addition to shielding static magnetism, it also needs to shield changing electromagnetic fields. Such as power frequency electromagnetic field. In addition to requiring high magnetic permeability, high electrical conductivity is also required. The ideal material is Permalloy. Considering the price and processing factors, electromagnetic pure iron is suitable for the large shielding cover. When the nickel content of permalloy is higher than 40%, the magnetic permeability and electrical conductivity are very good. In addition, iron-aluminum alloys containing 15% to 16% aluminum are also commonly used magnetic screen materials. High-frequency electromagnetic shielding: To shield electromagnetic waves as the main purpose, the principle of shielding is Lenz's law. The induced electromagnetic field in the shielding case is used to offset the external electromagnetic interference. Good conductors should be used to make the shielding case, such as aluminum and copper. Hardware, 15 years of focus on magnetic shielding, 20,000+ sets of customized stamping mold production experience, monthly processing capacity of 100+ sets of molds, hundreds of precision processing production equipment, daily production capacity of 3 million punches, silk-like stamping accuracy up to 0.01mm , The raw materials are imported and the original national standard factory, and 16 quality inspections are strictly controlled. If you want to ask which manufacturer of shielding cover is better? Combining the market, combining beer, combining yourself, and choosing all aspects, Xiaoshuo must believe that you can find your ideal partner.