What is the reason for rusting the claws?
Stainless steel is the surface of the formation of a very thin layer of thin and strong and stable stable chromium oxide film (protective film), to prevent oxygen atoms continue to infiltrate, continue to oxidize, and get the ability to resist corrosion. There is some reason, this film is constantly destroyed, the air or liquid and oxygen atoms will continue to infiltrate or metal iron atoms continue to precipitate out to form loose iron oxide, metal surface will be constantly Rust.
1, the surface of stainless steel deposits with other metal elements of dust or heterogeneous metal particles attached to the wet air, between the attachment and stainless steel condensate, the two together into a micro-battery, triggering the electrochemical reaction , The protective film is damaged, called electrochemical corrosion.
2, stainless steel surface adhesion of organic juice (such as melon vegetables, soup soup sputum, etc.), in the case of water and oxygen, constitute organic acids, long time to form organic acid corrosion of metal surface.
3, stainless steel surface adhesion containing acid, alkali, salt substances (such as decorative walls of alkaline water, lime water spray test) caused by local corrosion.
4, in the contaminated air (containing a lot of sulfide, oxide, hydrogen oxide atmosphere), in case of condensate,
The formation of sulfuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion.
The above can cause damage to the surface of the stainless steel protective film, causing corrosion. So, to ensure that the metal surface is permanently bright and not rusty, we recommend:
① must always clean the surface of the decorative stainless steel scrub, remove the attachment, to eliminate the external factors that cause corrosion.
② There is a 201 and 202 stainless steel in the market is easy to rust in the coastal area, suitable for use in industrial pollution and air corrosion environment.
③ beach area to use 304 stainless steel, 304 material can resist seawater corrosion.
