The non rust of the stainless steel means it can have chemical stability around the corrosion mediums of air , water , acid, alkali, salt or others. But it does not means the stainless steel does not rust completely. Whether the stainless steel will rust or not is influenced by the molecular structures, the processing technical, the operating environment and so on. TO prevent the stainless steel from rusting extremely, please pay attention to the following factors.
Stainless steel have certain chemical stability doesn't mean you can stop routine maintenance. Its not a good idea to take measures to clean stainless steel after it rust severely. Stainless steel contains chromium which made it not easy to rust and corrosion. Chromium combines with oxygen into dense oxidized film in the air which can prevent stainless steel from oxidation and corrosion. So the stainless steel products will begin to rust where the oxide firm damaged by some reason and the chromium cant combine with oxygen. The only thing we need to do is guarantee chromium can combine with oxygen cause once the oxide firm produced the stainless steel is not easy rust. Stainless steel rusting for many reasons, largely because of iron floating or harmful gas components in the air and sea breeze contained salt. These things accumulate as attachments, combined with moisture will destroy the oxide firm and its regeneration. The stainless steel products begin to rust. Simple clean can remove the rust in the initial state of this process. The stainless steel products can be look like a new one as long as the removal of work done, even after long time rust. Stainless steel rusting is only the surface of the products but not the material itself. As long as we take regular maintenance, the original appearance of stainless steel products can be kept forever.
