The bolt is a type of standard parts (fasteners) composed of a cylinder with external threads, that is, a screw and a head. As a type of standard parts, it is widely used in construction, electronics, machinery, metallurgy and chemical industry, etc., and the bolt is a very common mechanical part in standard parts. Naturally, it has created a variety of types due to different needs. However, as a metal product, the bolt is exposed to the air for a long time, and it will rust and be corroded after a long time, so some anti-corrosion methods can be taken in the daily use of bolts to make its use time longer. So today, Xiaobian will introduce several common classification of bolts and anti-corrosion methods.
1、Hexagonal Bolt
2、Cylindrical head hex bolt, countersunk head hex bolt
3、eye bolt, T-bolt
4、U-bolt, anchor bolt
5、Flange bolt (left: flange face without grain right: flange face with grain (increase friction)
The main reason that the bolt will corrode is related to its use environment and its own material, because the external use environment is not easy to be changed, so it can only work hard in the production process, the general corrosion prevention method of the bolt is electrogalvanizing, and the electrogalvanizing coating is very thin, will not affect the normal use of the bolt. If the galvanized layer is damaged, it must be repaired in time. The wind power industry generally has high anti-corrosion requirements for standard parts, so after installation, it will also uniformly brush Robaru cold galvanized coating, thereby effectively extending the anti-corrosion aging of standard parts.
