The cap screw are made of metal, and the metal anti-cor […]
The cap screw are made of metal, and the metal anti-corrosion methods are mainly in four aspects, namely the nature of the material itself, the environment in which the bolts are used, the interface between the material and the environment, and the design of the improve metal structure. If the alloy is made of a complete anti-corrosion alloy, Cap screws, unless otherwise required, are not practical in terms of economics, or completely separate the appearance of the cap screws from the environmental elements that can cause corrosion, and may not be practical in practical use. Or the program is too cumbersome. Improved metal construction design can improve the impact on special circumstances in a certain environment, but the design of most cap screws cannot be fully modified, and its maintenance effect is not once and for all, so this method can not basically deal with the problem, as long as the surface is protected Corrosion protection, that is, external anti-corrosion treatment is currently the most widely used method.
The anti-corrosion treatment of the cap screw refers to the application of a maintenance layer on the metal surface by various methods. The function of the cap is to isolate the metal from the corrosive environment to suppress the corrosion process or reduce the contact between the corrosive medium and the metal surface. Avoid or reduce the purpose of corrosion cap screws.