Dx51d Galvanized Zinc Coated Gi Coil

For galvanized coils, the sheet steel is immersed in a molten zinc bath to make a sheet of zinc coated on its surface. It is mainly produced by continuous galvanizing process, that is, the rolled steel plate is continuously immersed in a plating tank with zinc melted to make Galvanized Steel plate; alloyed galvanized steel plate. This kind of steel plate is also manufactured by hot dip method, but immediately after being out of the tank, it is heated to about 500 ℃ to form an alloy coating of zinc and iron. This Galvanized Coil has good paint adhesion and weldability.

DX51 Material

The material of the dx51d galvanized sheet is a non-ferrous alloy composed of zinc as the matrix and adding other elements. The main alloying elements are aluminum, copper, magnesium, and so on. Zinc alloy has a low melting point, good fluidity is easy to be plastically processed and welded, and is resistant to atmospheric corrosion.

According to the manufacturing process, it is divided into cast zinc alloy and deformed zinc alloy. Commonly used cast zinc alloys are zinc-aluminum-copper-magnesium alloys, which have good casting process performance, and the cooling rate has little effect on mechanical properties. They are mostly used in the manufacture of mechanical parts, toys, decorations, and household appliances.

Commonly used wrought zinc alloys are zinc-Aluminum Alloy and zinc-copper alloy.

The former contains 4% to 15% of aluminum. In order to improve the strength and hardness of the alloy, a small amount of alloying elements such as copper and magnesium are also added. It has high strength and is easy to shape, and can replace some brass or duralumin to make precision forgings.

The latter contains 0.7% to 1.5% copper. Copper can increase alloy strength and impact toughness, and reduce plasticity. Zinc-copper alloy is suitable for making daily hardware products or replacing parts of brass.

In addition, there are zinc-titanium-based, zinc-lead-cadmium-iron-based deformed zinc alloys. The supply status of wrought zinc alloy is wire, plate, forging or extrusion, etc.

Surface：

(1) spangle coating of normal zinc coating
During the normal solidification process of zinc layer, zinc grains grow freely to form a coating with obvious zinc flower morphology.
(2) ShellShellSpangle coating of small zinc flowers
During the solidification process of zinc layer, the zinc grains are artificially limited to form as fine zinc flower coating as possible.
(3) Zinc free coating spangle-free
By adjusting the chemical composition of the bath, the coating does not have visible zinc flower morphology, uniform surface.

Features:

1. Corrosion Resistance: Galvanizing is an economical and effective rust prevention method that is often used. About half of the world's zinc production is used for this process. Zinc not only forms a dense protective layer on steel surface, but also has cathodic protection effect. When the zinc coating is damaged, it can still prevent the corrosion of iron based materials through cathodic protection.

2. Good Cold Bending and Welding Performance: low carbon steel is mainly used, which requires good cold bending, welding performance and certain stamping performance.

3. Reflectivity: high reflectivity, making it a thermal barrier.

4. The Coating Has Strong Toughness, and the zinc coating forms a special metallurgical structure, which can withstand mechanical damage during transportation and use.

GNEE STEEL: