The Cap Screw To Prevent Rust

  • Cap screws are common fasteners in daily life. During use, rust is a common phenomenon and annoying things. This will not only affect the aesthetics, but also affect the performance of the Cap Screw. Therefore, we must pay attention to the process of using the cap screw.

    1. The surface of stainless steel adheres to acid, alkali and salt substances (such as alkali water and stone water splashing on the wall), causing local corrosion.

    Second, the attachment of dust or heterogeneous metal particles, in the humid air, the condensate of the attachment and the cap screw, the two are connected into a micro-battery, causing an electrochemical reaction, the protective film is destroyed, called the electricity Chemical corrosion.

    Third, in polluted air (such as the atmosphere containing a large amount of sulfide, carbon oxides, nitrogen oxides), in the case of condensed water, the formation of sulfuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion.

    4. The surface of the cap screw adheres to the organic juice (such as melon, noodle soup, glutinous rice, etc.), and in the case of water and oxygen, it constitutes an organic acid, and the organic acid corrodes the metal surface for a long time.