Several Characteristics of Electro-Galvanizing

The purpose of electrogalvanizing is to prevent steel objects of PCB board from being corroded, improve the corrosion resistance and service life of steel, and at the same time increase the decorative appearance of the product. Steel will be weathered and rotted by water or soil over time. The steel that is corroded every year in China accounts for almost one-tenth of the total amount of steel. Therefore, in order to protect the service life of steel or its parts, electro-galvanizing is generally used to process steel.

Since zinc is not easy to change in dry air, and can produce a basic zinc carbonate film in a humid environment, this film can protect internal parts from corrosion damage, even if the zinc layer is damaged by some factor. In some cases, zinc and steel combine over time to form a microbattery, with the steel matrix protected as a cathode. Electro galvanizing has the following characteristics:

1. Good corrosion resistance, meticulous and uniform combination, not easy to be entered by corrosive gas or liquid.

2. Because the new layer is relatively pure, it is not easy to be corroded in acid or alkali environment. Effectively protect the steel body for a long time.

3. After passivation by chromic acid, it can be used in various colors, which can be selected according to customers’ preferences. The galvanizing is elegant and decorative.

4. The zinc coating has good ductility and will not fall off easily during various bending, handling and impact.