How to do aging and corrosion of galvanized screws

Galvanized screws made of carbon steel are used for a long time, and aging and corrosion are inevitable.

During the long-term use of galvanized screws, zinc coatings often appear white, black, black, etc., mainly due to corrosion caused by galvanized coatings and corrosive media and atmospheric moisture, oxygen, and carbon dioxide exposure.

In order to prevent this phenomenon, the surface state of the good material that can be tried is before the screw processing. Due to the galvanizing process, the surface of the defective screw is easily permeated by a corrosive medium such as acid, alkali, salt, etc., and it is difficult to clean and cause corrosion.

In order to prevent the anti-corrosion treatment of galvanized screws, it is already decreased, and the Nasdaq rust-preventing agent tank rust-proof screw nut is used for swimming, or a zinc and chromium compound is used to form a protective film on the metal surface to form a spray method. Drying, cooling and then repeating the process once, the resulting about 5-8μ, so that the galvanized screws have good rust and corrosion resistance.

If you need to produce galvanized screws, look for Shi Shi Tong Metal Products Co., Ltd., which has a service life 1.5 times higher than that of its peers.

If you want to know more about galvanized screws please feel free to contact us at annie.li@szsst88.com