Although stainless steel is called stainless steel, it is by no means rust-free. We must know how to avoid rust when using stainless steel fasteners. In the use process, rust is a common phenomenon, but also let us worry about things, which will not only affect the aesthetic level, but also affect the performance of stainless steel screw.

Therefore, we must pay attention to the key points in the process of using stainless steel screw. The following four points are summarized in the short edition for your reference:

1. In polluted air (such as atmosphere containing a large amount of sulphide, carbon dioxide and nitrogen oxide), when condensate water comes into being, sulfuric acid, nitric acid and acetic acid solution points will be formed, which will cause chemical corrosion.

2. The surface of stainless steel screw is adhered with organic juice (such as melon, vegetable, noodle soup, phlegm, etc.). Under the condition of water and oxygen, organic acid is formed, and for a long time, organic acid corrodes the metal surface.

3. Attachments of dust or heterogeneous metal particles, in moist air, attachments and condensed water of stainless steel screw, connect them into a micro-battery, which triggers electrochemical reaction and destroys the protective film, which is called electrochemical corrosion.

4. The adherence of stainless steel surface contains acid, alkali and salts (such as alkali water and lime water splashing on decoration walls), which causes local corrosion.