This particular kind of sheet is a carbon steel
sheet and is zinc coated on two sides by way of continuous process of
hot-dipping.
This process of hot-dip enables a tight layer of iron-zinc alloy on both
sides of the steel sheet. This iron-zinc alloy is formed by a diffusion
process when the molten zinc comes in contact with the heated steel
strip. Hot dip galvanized steel sheets are available to it's customers
in a wide variety of options like- different surface finishes,
thickness, formability levels etc. Sheets of such make stretched, deep
drawn, lock seamed. These sheets can be easily joined with the help of
adhesives or by way of welding, soldering and riveting. The sheet has
qualities like corrosion resistance, formability and the fabrication and
easy joining process. Thus it is evident that the end user has a lot to
extract from such sheets in the various applications.
Applications
The corrosion resistance quality is achieved in the galvanized steel
sheet due to it's zinc coating. It is thus evident that a longer shelf
life of the product can be achieved by increasing the thickness of the
zinc coating. But there are certain limitations to increasing the
thickness too that is as the thickness increases, the coating adhesion
decreases during forming, the surface smoothness is lessened and the
weldability also decreases. Galvanized steel sheet is ideal for
application where corrosion resistance is of utmost importance. The
ideal places of application are:
- Air conditioning equipment
- Building panels
- Electrical boxes
- Electronic equipment
- Automotive parts including body panels and structural members
- Building panels
- Display cases
- Furnace parts and ductwork
- Mailboxes
- Farm buildings
- Equipment and machinery
- Guide rails
- Garbage cans
- Heating equipment
- Home laundry appliances
- Lighting fixtures
- Wall panels
- Prefabricated buildings
- Outdoor signs
- Playground equipment
- Vending machines
- Refrigerators and freezers
- Toolboxes
- Roofing
In all the above mentioned applications galvanized coated steel
sheet is preferred since it is corrosion resistant and thus increases
the shelf life of the product. In applications wherein there is
involvement of high temperature galvanized sheet should be cautiously
used, the temperature should not be more than 500° F. If the
temperature increases this level then the coating gets negatively
affected. Galvanized sheets are best suited to provide long service in
moderate temperature.
