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Are the silver contacts pure silver?

Are the silver contacts pure silver?

Categories:FAQ
Author:
Origin:
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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Next: How to know the quality of silver contacts is good or bad?

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Next: How to know the quality of silver contacts is good or bad?

FAQ

Are the silver contacts pure silver?

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.

How to know the quality of silver contacts is good or bad?

The silver contacts used in our switches can be judged as good or bad. The closing of the switch is achieved by the opening and closing of the silver contacts on the copper sheet to achieve the energized state. The thickness of the silver contacts directly affects the electrical conductivity. The thickness of silver coating of ordinary switches is 0.2-0.3mm, and the higher the thickness of silver coating, it can effectively reduce the generation of sparks during switch closing and prolong the service life of the switch.

The resistance of the silver contact

Silver contacts have high electrical and thermal conductivity, low and stable touch resistance, good welding and processing functions. Fine-grained silver contains a small amount of silver in the silver, which greatly refines the material arrangement grains. In the case of almost the same touch resistance, its mechanical strength and temperature resistance are higher than that of silver. Therefore, the solder resistance and arc burn resistance are better than silver.

What are the areas of silver contacts?

In the field of silver contacts, it is generally divided into pure silver contacts, silver-nickel alloy contacts, silver tin oxide contacts, silver cadmium oxide contacts, etc. However, in the switch industry, manufacturers and application companies generally know how to Choose the switch silver contact to ensure the quality and life of the switch, and many small and medium-sized enterprises have a lack of awareness of silver contacts. In the switch industry, silver cadmium oxide and silver nickel alloy contacts are more widely used. , But how much do you know about the ratio and production process?

Understanding of composite silver contacts?

According to the number of constituent elements, it can be divided into binary alloys, ternary alloys and multi-element alloys. Understanding of composite silver contacts? Since the metal conductor terminal is prone to instantaneous heat and sparks at the moment of contact, the contact point is prone to oxidation and electrolysis in the multi-frequency process of use, so the contact point is increased and thickened, or polymer metal is used. Manufacturing (copper and silver are the most common materials), so this contact point is made of polymer metal.

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