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Causes the rust of stainless steel screws

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Causes the rust of stainless steel screws

Release date:2018-11-06 Author: Click:

Do you know the reason for stainless steel screws rusting? The next small series will introduce in detail:


1. Attach dust or dissimilar metal particles, in humid air, deposit condensate and stainless steel screws, which are connected into a micro-battery to trigger an electrochemical reaction and the protective film is destroyed. Chemical corrosion.


2. The surface of the stainless steel screw is attached with organic juice (such as melon, noodle soup, glutinous rice, etc.). In the case of water and oxygen, it constitutes an organic acid. Organic acids have long eroded metal surfaces.


3. The surface of the stainless steel is attached with acid, alkali and salt substances (such as alkaline water and stone water splashed on the wall), causing local corrosion.


4. In the case of polluted air (such as an atmosphere containing a large amount of sulfides, carbon oxides, and nitrogen oxides), in the case of condensed water, sulfuric acid, nitric acid, and acetic acid liquid dots are formed to cause chemical corrosion.


Attention must be paid to the use of stainless steel screws. Stainless steel screws are common fasteners in everyday life. Rusting is a common phenomenon and annoying thing during use. This will not only affect the aesthetics, but also the performance of stainless steel screws.


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