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Are the silver contacts pure silver?

Are the silver contacts pure silver?

  • Categories:FAQ
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  • Time of issue:2021-07-30 11:34
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(Summary description)The first step is to prepare the silver extraction solution (acid). The silver withdrawal liquid specifically dissolves the silver dots. The brass matrix and the copper matrix are not damaged, and the copper is sold directly after cleaning.

Are the silver contacts pure silver?

(Summary description)The first step is to prepare the silver extraction solution (acid). The silver withdrawal liquid specifically dissolves the silver dots. The brass matrix and the copper matrix are not damaged, and the copper is sold directly after cleaning.

  • Categories:FAQ
  • Author:
  • Origin:
  • Time of issue:2021-07-30 11:34
  • Views:
Information
The first step is to prepare the silver extraction solution (acid). The silver withdrawal liquid specifically dissolves the silver dots. The brass matrix and the copper matrix are not damaged, and the copper is sold directly after cleaning.
 
After the silver on the silver-plated copper and silver contacts is selectively removed, the substrate is cleaned and sold, and then the silver in the silver removal solution is recovered, and then smelted to obtain pure silver with a purity of 99.9%.
 
Pure silver is a silver-white metal. It has good ductility, and its electrical and thermal conductivity are higher among all metals. Silver is often used to make sensitive physical instrument components, various automation devices, rockets, submarines, computers, nuclear devices, and communication systems. A large number of contact points in all these devices are made of silver.
 
The world's annual output of silver and silver-based electrical contact materials is about 2900-3000 tons. Composite materials are materials prepared by using composite technology, which are divided into silver alloy composite materials and silver-based composite materials. From the perspective of silver saving technology, silver composite materials are a kind of promising new materials. Silver soldering materials such as pure silver solder, silver-copper solder and so on.
 
Silver contacts generally need to be plated with silver to enhance their electrical conductivity and prevent oxidation. When electronic appliances are opened and closed, since the metal conductor terminals are prone to instantaneous heat and sparks at the moment of contact, the contact points are prone to oxidation and electrolysis in the multi-frequency process of use, so the contact points are enlarged. Thicker, or made of polymer metal (copper and silver are the most common materials).

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