What is the corrosion of waterproof connector plugs?

by | May 9, 2023 | Blog | 0 comments


China,Guangdong,Shenzhen,Building E, Xiashijia Second Industrial Zone (Lihao Aoda Science Park), Ma Tian Street, Guangming New District

EW-LP Series Device Connectors

The EW-LP20 series connectors are designed for high-precision, high-quality automatic insertion. With features such as self-locking device and waterproof and dustproof, it is widely used in various challenging environments.

Object oxidation is a relatively common phenomenon, in fact, waterproof connector plugs are also oxidized a large part of the reason is the failure to use corrosion occurs, we are here today to learn more about the various types of corrosion-resistant waterproof connector plugs!


Metal and the surrounding environment to occur chemical or electrochemical reaction, causing some significant changes in the metal, so that the performance and function of metal materials deteriorate, known as corrosion. Corrosion can have a potential impact on the metal parts of the connector plug(shell and contacts). Atmospheric corrosion, localized corrosion, cracking corrosion, pitting corrosion and galvanic corrosion are the most common forms of corrosion.

Forms of corrosion of waterproof connector plugs:

1, waterproof connector plugs atmospheric corrosion: corrosion has an electrolytic nature. Accelerated deterioration requires only a thin film of water. Atmospheric corrosion rate and temperature, temperature, sulfate and chloride concentration of atmospheric pollutants.

2, waterproof connector plugs local corrosion: the relative corrosion area is small, but the corrosion mechanism is similar to the general corrosion, usually occurs on the surface of the product on some small cracks, not easy to show the main corrosion effect.

3, waterproof connector plugs crevice corrosion: in the metal surface is corroded local etching to form more than refers to the need to be fully protected from corrosion in the environment between the different parts of the exposed area. Between metal and non-metallic components or narrow gaps between components, cracks, scars or other surface defects is likely to be the source of crevice corrosion.

4, waterproof connector plugs microporous corrosion: thin, porous coatings occur when the form of corrosion. When the presence of a water film containing ionized gas, a primary cell effect occurs. Corrosion products through the coating of small holes from the active base or base metal across the contact surface. Microporous corrosion is often associated with the interaction of chlorides with oxygen and sulfate.

5, electrochemical corrosion: a form of accelerated corrosion in which a metal or an alloy is in contact with a metal that is more chemically inert than in the same electrolyte. In bimetallic contact structures, this form of corrosion is one of the most serious degradation effects, whenever galvanic corrosion occurs, as long as the different metals coexist in a solution containing salt ions.

After reading these you should have a further understanding of the function of the waterproof connector plug


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