Motherboard interface shielding cover, what are the functions of the shielding cover + silk-like stamping accuracy up to 0.01mm

The technicians who manufacture the hardware of the motherboard interface shielding cover have said that shielding is the isolation of metal between two spatial areas to control the induction and radiation of electric fields, magnetic fields and electromagnetic waves from one area to another. The following Xiaoshuo takes everyone to take a look at the knowledge of the shielding cover: Specifically, the shielding body is used to surround the interference sources of the components, circuits, assemblies, cables or the entire system to prevent the interference electromagnetic field from spreading; Surround the receiving circuit, equipment or system to prevent them from being affected by the external electromagnetic field. Because the shielding body absorbs energy (eddy current loss), reflected energy (reflection of electromagnetic waves on the interface of the shielding body) and offsetting energy (electrical interference) from external interference electromagnetic waves and internal electromagnetic waves from wires, cables, components, circuits or systems. Magnetic induction produces a reverse electromagnetic field on the shielding layer, which can offset part of the interference electromagnetic wave), so the shield has the function of reducing interference. (1) When the frequency of the interfering electromagnetic field is high, the eddy current generated in the low-resistivity metal material is used to form the cancellation effect of the external electromagnetic wave, thereby achieving the shielding effect. (2) When the frequency of interfering electromagnetic waves is low, materials with high magnetic permeability should be used, so that the lines of magnetic force are limited to the inside of the shield and prevent spreading to the shielded space. (3) In some cases, if a good shielding effect is required for both high-frequency and low-frequency electromagnetic fields, different metal materials are often used to form a multi-layer shielding body. Hardware, 15 years of focus on motherboard interface shielding, 20,000+ sets of customized stamping die production experience, monthly processing capacity of 100+ sets of molds, hundreds of precision processing production equipment, daily production capacity of 3 million punches, and silk-like stamping accuracy up to 0.01 mm, the raw materials are imported and the original national standard factory, and 16 quality inspections are strictly controlled.