What is the main reason for the rust of the stainless steel filter mesh? The stainless steel filter mesh is not solution treated.
Solution treatment: refers to heating the alloy to a high temperature single-phase zone to maintain the temperature, so that the excess phase is fully dissolved into the solid solution and then rapidly cooled to obtain a heat treatment process of the super-saturated solid solution.
Chloride ion in the environment of use
Chloride ions are mainly found in purifying liquids and gases. The use of stainless steel in the presence of chloride ions will accelerate the corrosion even beyond ordinary low carbon steel.
Stainless steel filter mesh natural intergranular corrosion
Stainless steel that produces intergranular corrosion, when subjected to stress, breaks along the grain boundary and almost completely disappears. This is one of the most dangerous forms of failure of stainless steel.
A corrosion phenomenon caused by stainless steel under the action of corrosive media is called intergranular corrosion.
Stainless steel does not rust because both chromium (Cr) and nickel (Ni) levels meet certa
in standards. These two alloys are the key to whether or not steel can prevent rust.
Destruction of surface passivation protective layer
Passivation is due to the action of metal and oxidizing substances. When applied, it forms a very thin, dense, and well-covered passivation film firmly adhered to the metal surface.
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