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What are the characteristics of galvanizing?
SendTime：2019-4-4
The purpose of galvanizing is to prevent steel from being corroded, to improve the corrosion resistance and service life of steel, and to increase the decorative appearance of products. Steel will be weathered and corroded by water or soil as time goes on. Corroded steel accounts for almost one tenth of the total amount of iron and steel in China every year. In order to protect the service life of iron and steel or its parts, galvanizing is generally used to process iron and steel.
Because zinc is not easy to change in dry air and can produce a basic zinc carbonate film in humid environment, this kind of film can protect internal parts from corrosion damage. Even if the zinc layer is destroyed by some factors, zinc and steel will form a micro-battery after a period of time, which will make the steel matrix become cathode and be protected. The following characteristics of galvanizing are summarized:
1. Good corrosion resistance, fine and uniform combination, not easy to be corrosive gases or liquids into the interior.
2. Because the zinc layer is relatively pure, it is not easy to be corroded in acid or alkali environment. Protect steel body effectively for a long time.
3. After passivation with chromic acid, various colors can be selected according to customers'preferences. Galvanizing is beautiful and elegant, with decorative properties.
4. Zinc coating has good ductility, and it can not easily fall off during various bending, handling and impact.
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