Dongguan shielding cover, the knowledge of shielding cover will take you to understand + cooperation with global top 500 companies for many times [hardware]

Hello everyone, I am a hardware shield manufacturer that is responsible for the production of shielding covers in Dongguan. Today, Hardware brings you some knowledge about shielding covers. Let’s take a look! The inner and outer surfaces of the mobile phone shielding cover, and the inner and outer sides of the bend are crushed: there are two situations, (1) small hole skipping waste, large hole skipping waste: long-term production causes the punch blade to wear out and the gap becomes larger, and the waste cannot be stuck. Crushing caused by headband ejection surface (2) Powder crushing: The gap between the punch and the knife edge is too large or too small to cause the powder to fall off the die surface. When the material passes through the leveler and the feeder, the product will be directly crushed by the dust and fine iron filings in the machine. Generally, there are two shielding covers in mobile phones, covering the RF and BB sections respectively. If it is a baseband circuit, a circuit board shield, like the core is an AMR9 high-speed circuit, or there are some inductive boost components in the baseband, shielding cover, mobile phone shielding cover on the one hand to prevent external electromagnetic radiation from affecting the radio frequency circuit, but also to prevent radio frequency interference Affect the normal operation of the devices in the baseband circuit, like a mobile phone shield. In detail, it is to use a shield to surround the interference source of components, circuits, assemblies, cables or the entire system to prevent the interference electromagnetic field from spreading out; use shielding The body wraps up the receiving circuit, equipment or system to prevent them from being affected by the external electromagnetic field. It can not only be said that the shielding cover is to prevent radiation or be radiated. The hardware and system are complete and formal, the team is stable, and there is a stepped reserve of technical personnel, which can respond in time when the order breaks out, and the after-sales service responds to customers 24 hours a day.