There are several reasons for the rust in stainless steel stair rails in daily life:
1. On the surface of the stainless steel, there are deposits of dust or dissimilar metal particles containing other metal elements. In humid air, the condensed water between the deposit and the stainless steel is connected into a micro battery, which triggers an electrochemical reaction. The protective film is damaged, which is called electrochemical corrosion.
2. The surface of the stainless steel adheres to the organic juice (such as melon, noodle soup, glutinous rice, etc.), and in the case of water and oxygen, constitutes an organic acid, and the organic acid corrodes the metal surface for a long time.
3. The surface of the stainless steel adheres to acid, alkali and salt substances (such as alkali water and lime water splashing on the wall), causing local corrosion.
4. In polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxide, nitrogen oxide), in the case of condensed water, sulfuric acid, nitric acid, acetic acid liquid point is formed, causing chemical corrosion.
All of the above can cause the corrosion of the stainless steel surface protective film to cause rust. Therefore, in order to ensure that the metal surface is permanently bright and not rusted, we recommend:
1 The decorative stainless steel surface must be cleaned and scrubbed frequently to remove the deposits and eliminate external factors that cause modification.
2 The 201 and 202 stainless steels on the market are easy to rust in the coastal areas, and are suitable for use in the absence of industrial pollution and air corrosion.
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Luli Group Co.,Ltd. , http://www.plywoods.nl