The difference between galvanized sheet and galvanized sheet

The Difference Between Galvanized Sheet And Galvanized Sheet

The difference between galvanized sheet and galvanized sheet:

Galvalume steel sheets with 55% aluminum-zinc alloy coating have superior corrosion resistance compared to galvanized steel sheets of the same thickness when both sides are exposed to the same environment. The galvanized steel plate with 55% aluminum-zinc alloy coating not only has good corrosion resistance, but also the color-coated product has excellent adhesion and flexibility.

The difference between galvanized sheets and galvanized sheets mainly lies in the difference in coating. A layer of zinc material is evenly distributed on the surface of the galvanized sheet, which plays an anode protection role for the base material, that is to say, the zinc material provides alternative corrosion protection. Without the use of the base material, only when all the zinc has corroded can the base material inside be harmed.

The surface coating of galvalume plate is composed of 55% aluminum, 43.5% zinc and a small amount of other elements. Microscopically, the surface of galvalume coating has a honeycomb structure, and the "honeycomb" composed of aluminum contains zinc. In this case, although the galvanized coating also plays the role of anode protection, on the one hand due to the reduction in zinc content and on the other hand because the zinc material is wrapped in aluminum and is not easy to electrolyze, the role of anode protection is greatly reduced. Therefore, once aluminized When a zinc plate is cut, it will rust quickly if the cut edges are basically unprotected. Therefore, the galvanized plate should be cut as little as possible. Once cut, anti-rust paint or zinc-rich paint should be used to protect the edge before it can be used. The service life of the panels is extended.

Aluminized sheets are generally used in:

1. Car and motorcycle mufflers, exhaust pipes, and fuel tanks.

2. Combustion furnaces, heat exchangers, dryers, air conditioners, etc.

3. Household water heaters, gas stoves, bread boxes, chimneys, microwave ovens, food processing machinery, electric ovens, and cooking utensils.

It can also be used for building covers, walls, ceilings and other thermal insulation components.

Galvanized sheets are generally used in:

Construction industry: light steel keels, corrugated boards, ventilation ducts, floor load-bearing boards, mobile homes, factory roofs and bodies, municipal engineering enclosures.

Used as substrate for downstream products

Home appliance industry: shells and base plates of home appliances such as air conditioners, refrigerators, washing machines, microwave ovens, water heaters, computer cases, etc.

Automotive industry: car body, outer panels, inner panels, floor panels, doors, etc.

Other industries: storage and transportation, packaging, granaries, chimneys, buckets, ship bulkheads, etc.