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The resistance of the silver contact

Categories:FAQ
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Time of issue:2021-07-30 11:32
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(Summary description)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.

The resistance of the silver contact

Categories:FAQ
Author:
Origin:
Time of issue:2021-07-30 11:32
Views:

Information

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.

The silver-cadmium alloy water is beaten with high-pressure water into nano-level fine silver-cadmium alloy particles, and then the silver-cadmium alloy particles are oxidized into silver cadmium oxide alloy in a high temperature and high pressure oxidation furnace, and then the silver cadmium oxide alloy powder Generate silver alloy wire or sheet. The silver cadmium oxide alloy produced by this atomization process has fine grains and uniform distribution, with no over-oxygen zone and cadmium-poor zone.

The size of the silver contact resistance is closely related to the contact form and contact shape. The contact resistance in point contact is large, the contact resistance in line contact is smaller; the contact resistance in surface contact is smaller. In the medium and small power relays, line and surface contact are mostly used to improve the anti-welding and anti-corrosion capabilities. In small relays, bridge contact forms and bifurcated double-contact contact forms are often used to adapt to frequent actions and improve contact reliability.

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

Next: What are the areas of silver contacts?

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

Next: What are the areas of silver contacts?

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

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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