What's the cause of the damage the membrane on the surface of the stainless steel pneumatic valve

stainless steel pneumatic valve surface adhesion juice, organic matter in water is oxygen condition, organic acid, organic acid to for a long time and are on the surface of the metal corrosion. Stainless steel pneumatic valve surface adhesion containing acid, alkali, salt substances, can lead to local corrosion. Where there is pollution in the air ( Such as contains a lot of sulfur, oxidation of carbon, nitrogen oxide atmosphere) , encounter condensed water to form sulfuric acid, nitric acid, acetic acid, liquid,. 。 。
everybody's most direct intuition is that stainless steel pneumatic valve is never rust, would think that if we buy gave birth to rust stainless steel pneumatic valve, it is stainless steel. Actually otherwise, stainless steel under certain conditions is also will rust. Stainless steel has the ability of resistance to atmospheric oxidation, namely, stainless, also has in the medium containing acid, alkali, salt corrosion resistant ability, the corrosion resistance. But the size of the stainless steel corrosion resistance was as the chemical composition of steel itself, environmental conditions and using medium type and change.
and electrochemical corrosion. Deposited on the surface of the stainless steel pneumatic valve with other metal elements of attachments, or heterogeneous metal particles of dust in the humid air, attachments and stainless steel, the condensed water between the both together as a micro battery, triggers the electrochemical reaction, protective film.
pneumatic valves, stainless steel surface adhesion juice, organic matter in water is oxygen, organic acid, organic acid to for a long time and are on the surface of the metal corrosion.
pneumatic valves, stainless steel surface adhesion containing acid, alkali, salt substances, can lead to local corrosion.
, where there is pollution in the air ( Such as contains a lot of sulfur, oxidation of carbon, nitrogen oxide atmosphere) , encounter condensed water to form sulfuric acid, nitric acid, acetic acid, liquid, chemical corrosion.
the above situation can lead to the destruction of the stainless steel surface protective film of rust.