Stainless steel screws are common fasteners in daily life. In the course of use, rust is a common phenomenon, which not only affects the aesthetic level, but also affects the performance of stainless steel screws. Therefore, in the process of using stainless steel screws must pay attention to the use of points.
1. Attachment of dust or dissimilar metal particles, in the moist air, attachments and condensed water of stainless steel screws, connecting the two into a micro battery, which triggers an electrochemical reaction, and the protective film is destroyed. Chemical corrosion.
2. The surface of stainless steel screw adheres to the organic juice (such as vegetables, noodles, soup, etc.). In the presence of water and oxygen, organic acids are formed, and organic acids attack the metal surface for a long time.
3. The surface of stainless steel adheres with acids, alkalis, and salts (such as alkaline water and lime water splashing on the wall), causing localized corrosion.
4. In contaminated air (such as an atmosphere containing a large amount of sulfides, carbon oxides, and nitrogen oxides), condensed water is formed and sulfuric acid, nitric acid, and acetic acid liquids are formed, causing chemical corrosion.