Shanghai shielding cover, a number of precision stamping core technology patents + hundreds of advanced and precise stamping processing equipment [hardware]

Hello everyone, I am a precision shield manufacturer hardware responsible for the production of shields in Shanghai. Today I will bring you some knowledge about shields. Let’s take a look! The advantages and disadvantages of the raw materials of the shielding cover are as follows: White copper: the shielding effect is slightly worse, it is softer, the price is more expensive than stainless steel, and it is easy to tin. At present, most of the shielding covers are made of white copper. Stainless steel: good shielding effect, high strength, moderate price; but difficult to tin (it can hardly be tinned without surface treatment, it can be improved after nickel plating, but it is still not conducive to the patch) Tinplate: the shielding effect is the worst, but the upper Tin is good and cheap. Tin bronze: the shielding effect is slightly poor, and the tin is to be checked. Brass: the shielding effect is slightly poor, and the tin is to be checked. In the analysis of the above several products, nickel silver is due to its better shielding effect, and It has better corrosion resistance and good welding performance. Although the price is more expensive than stainless steel, most of them use nickel silver as the raw material of the shielding cover. In order to prevent external interference to sensitive circuits, a shielding cover is provided on each sensitive circuit in the prior art to prevent interference from EM1, signals and pulses. However, a printed short circuit board often includes multiple sensitive circuits, and the cost of each shielding cover is several thousand. Therefore, a shielding cover is provided on each sensitive circuit, which makes the traditional shielding cover packaging land structure production High cost. In order to prevent external interference to sensitive circuits, a shielding cover is provided on each sensitive circuit in the prior art to prevent interference from EM1, signals and pulses. However, a printed short circuit board often includes multiple sensitive circuits, and the cost of each shielding cover is several thousand. Therefore, a shielding cover is provided on each sensitive circuit, which makes the traditional shielding cover packaging land structure production High cost. In order to solve the above problems, the present utility model has designed and developed a shielding cover packaging structure. A shielding cover is welded on the printed circuit board. The shielding cover can cover a plurality of circuits to be shielded on the printed circuit board, and the shielding plate is used to shield The cover is divided into a plurality of cavities corresponding to the circuit to be shielded, and a shielding cover is used to shield the plurality of circuits to be shielded, so as to achieve the purpose of saving production cost. 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 after-sales service responds to customers 24 hours a day.