Galvanized Metal Sheets Manufacturing Environmental Impact

In a comprehensive study tongpool et al.

Galvanized metal sheets manufacturing environmental impact.

2010 compared the proportional impacts of different steel products slab hot rolled cold rolled hot dipped galvanized and electro galvanized steels in the categories of fossil fuels global warming potential ecotoxicity minerals carcinogens and respiratory inorganics and indicated that the hot dipped galvanized steel is with the highest impacts. The corrosion behavior of the galvanized coating in various atmospheric environments is influenced by many factors such as prevailing wind direction type and density of corrosive fumes and pollutants amount of sea spray number of wetting and drying cycles and the duration of exposure to moisture. Galvanized sheet is the most widely used coated steel plate globally in the industry of construction automobile electronics manufacturing etc. Large amounts of resources and energy are used in galvanized sheet production which likewise generates vast amounts of pollutant emissions.

Every year steel corrosion costs the economy around 2 2 million 1. Dangerous chemicals the process to fabricate sheet metal uses different solvents surface treatments cutting agents and more. Hot dip galvanized hdg steel has a number of environmental advantages that minimize the impact to the environment over the life of the project. Corrosion also known as rust is a natural process that occurs when steel is exposed to the environment.

Galvalume substrates are coated with an alloy of zinc plus aluminum. Galvalume has two to four times the corrosion resistance of galvanized steel even in harsh environments. These chemicals are often toxic so they are hard to work with and difficult to dispose of. This can create environmental hazards within the manufacturing plant and within the community.

Tons of co2 emitted into the atmosphere. In the face of the rapid growth of the production and demand of galvanized sheet in china it is very important to find out the key factors of the environment impact in the production of galvanized sheet. On average 1 83 tons of co2 is emitted for every ton of steel produced making steel production a major contributor to global warming adding over 3 3 million tons annually to global emissions. When properly installed these panels will shed rain and eliminate ponding water.

Greenhouse gas emissions from steel production.