Although stainless steel is called stainless steel, it […]
Although stainless steel is called stainless steel, it does not rust. We must know how to avoid rust when using stainless steel fasteners. In the process of use, rust is a common phenomenon, and it is also annoying things, which will not only affect the aesthetics, but also affect the performance of stainless steel screws.
Therefore, we must pay attention to the use points in the process of using stainless steel screws.
1. 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.
2, the surface of the stainless steel screw adheres to the organic juice (such as melon, noodle soup, glutinous rice, etc.), 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 attachment of dust or heterogeneous metal particles, in the humid air, the condensate of the attachment and the stainless steel screw, the two are connected into a micro-battery, causing an electrochemical reaction, the protective film is destroyed, called the electricity Chemical corrosion.
4. 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.