Galvanized Metal Connector refers to the surface of met […]
Galvanized Metal Connector refers to the surface of metal, alloy or other materials coated with a layer of zinc in order to play a beautiful, rust-proof surface treatment technology. The main method is hot dip galvanized. Zinc soluble in acid, but also soluble in alkali, it is called amphoteric metal. Zinc does not change much in dry air. In humid air, the zinc surface produces dense zinc carbonate membranes. In sulfur dioxide, hydrogen sulfide and marine atmosphere, zinc corrosion resistance is poor, especially in high temperature and humidity containing organic acid atmosphere, zinc coating easily corroded. Zinc plating after passivation, dyeing or coating with a light agent, can significantly improve its protective and decorative.
In fact, zinc is a very lively metal that is extremely susceptible to oxidation. However, zinc oxide is not a loose powder like iron oxide but a dense surface layer that prevents zinc from further oxidizing inside. When the surface of the galvanized steel is damaged and the internal iron surface is exposed, since zinc is more active than iron, zinc is oxidized prior to iron according to the chemical battery principle, thereby protecting the iron layer from being damaged. The two are integrated, is the protection of galvanized steel truth.
The above reasons, resulting in galvanized metal connectors are very popular with the public. Galvanized metal connectors prevent the steel substrate from contacting any corrosive solution and protect the steel fastener body from corrosion. Since zinc is not easily changeable in dry air, in moist air, the surface produces a dense zinc carbonate film that effectively protects the interior from corrosion. And when the coating is damaged for some reason to expose the substrate is not too large, the zinc and the steel substrate to form a micro-battery, so that the fastener substrate becomes a cathode and be protected.
In addition to galvanized metal connectors, zinc is also widely used in other fields. The field of electrogalvanization is more and more widely used. The application of fastener products has spread throughout the machinery industry. It is of great significance in the national economy to produce galvanized chain link fence, electronics, precision instruments, chemicals, transportation and aerospace.