Under what circumstances is the stainless steel filter cartridge easy to rust?

Stainless steel filter cartridges are not easy to rust according to their names, but they can rust sometimes. Under what circumstances are stainless steel filter cartridges easy to rust? Today, let's briefly introduce it.

When the stainless steel filter screen cylinder is in polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide and nitrogen oxide), it meets with condensate, forming sulfuric acid, nitric acid and acetic acid liquid points, causing chemical corrosion.

The surface of the stainless steel filter cartridge is adhered with acid, alkali and salt substances (such as alkali water and lime water splashing on the decoration wall), causing local corrosion.

Organic juice (such as melons and vegetables, noodle soup, phlegm, etc.) adheres to the surface of stainless steel filter screen cylinder, which constitutes organic acid in the presence of water and oxygen. For a long time, the organic acid will corrode the metal surface.

There are dust containing other metal elements or attachments of dissimilar metal particles on the surface of the stainless steel filter cartridge. In the humid air, the condensate between the attachments and stainless steel connects them into a micro battery, causing electrochemical reaction and the destruction of the protective film, which is called electrochemical corrosion.