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What material is generally used for the shielding cover?

Author: Bos Hardware EditorSource:www.bosiwj.comRelease time:2019-08-22-12:21点击率:5991

      Shielding covers are used more and more in electronic products, but due to the cost of raw materials and the different signal requirements of each product, each company has its own considerations in the selection of materials. At the same time, because the prices of raw materials vary greatly, the materials used are also different, but the materials are nothing more than the following: stainless steel, white copper, tin bronze, brass, tinplate, etc. Among them, white copper, stainless steel and tinplate are the most widely used. widely. The advantages and disadvantages of several shielding cover materials are as follows:
    
      Copper-Nickel-Zinc Alloy : good shielding effect, softer, more expensive than stainless steel, easy to tin, most shielding covers are made of Copper-Nickel-Zinc Alloy
      Stainless steel: good shielding effect, high strength, and moderate price; but it is difficult to apply tin (it is almost impossible to apply tin without surface treatment, and it is improved after nickel plating, but it is still not conducive to SMD)     
      Tinplate: The worst shielding effect, but good tinning and cheap
      
Tin bronze: The shielding effect is slightly worse, and the tinning situation is to be investigated
      
Brass: The shielding effect is slightly worse, and the tinning situation is to be investigated

In the material analysis of the above products, white copper is more expensive than stainless steel because of its better shielding effect, better corrosion resistance and better welding performance, but most of them choose white copper as the shielding cover. raw materials. The following mainly introduces the composition of white copper:

      Copper-Nickel-Zinc Alloy is a copper-based alloy with nickel as the main alloying element, and it is named because most of them are silver-white. Copper and nickel can dissolve in each other infinitely to form a continuous solid solution. Adding nickel to copper can significantly improve corrosion resistance, strength, hardness, electrical resistance, and reduce the temperature coefficient of resistivity. Among copper alloys, cupronickel is widely used in mobile phone signal shielding, electronic products, shipbuilding, petroleum, chemical industry, electric power, precision instruments, medical equipment and other departments as corrosion-resistant structural parts due to its excellent corrosion resistance and easy plastic processing and welding. Some cupronickel also has special electrical properties, which can be used to make resistive elements, thermocouple materials and compensation wires.

       The above are the advantages and disadvantages of several commonly used materials for shielding covers. White copper is currently the most used in the market. At the same time, due to price and product requirements, stainless steel and tinplate are also widely used in the market.

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      As a leader in the custom shield processing industry, Dongguan Bos Hardware has been focusing on the shielding technology for 20 years, introducing a German CNC micro-proofing machine, the system is automatic proofing, the whole computer control is fast and accurate, three days proofing saves mold opening, 12 hours Expedited sample production, repeatability up to 0.01mm, flatness up to 0.02mm, pioneering in the industry, capable of solving the pain points and difficulties of customers customizing non-standard parts of precision hardware, Bosi EMI shielding effect is good, high precision, it is the most popular The first choice for customers to purchase!

      BOSI shielding cover has 12 years of foreign trade export experience, the quality is guaranteed, the best material is selected, and the craftsmanship has reached the industry-leading level! We only customize high-quality shielding covers, the company has passed ISO9001: 2015, IATF 16949 certification, the products are favored by new and old customers! Choosing Boise is equal to choosing high quality! At present, Bosi has more than 200 kinds of shielding case samples and molds, covering various specifications of the shielding case required by users with a high probability, saving the time and cost of mold opening and proofing for customers, you only need to provide the size, we will Get a quick quote for you and provide you with a sample drawing of a similar shield.

  If you are interested in purchasing shields, pls kindly contact us.


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