Press-locked Galvanized steel grating
The press-locked galvanized steel grating is made of low carbon steel and stainless steel. A grid is formed by welding or pressing cross bars to bearing bars. Press-locked grating is widely used in power plants, chemical plants, oil refineries, steel mills, machinery factories, shipyards, paper mills, and other industries because of its high strength, light structure, and high bearing capacity.
An overview of the galvanized steel grating manufacturing process
Step 1: Pre-Treatment:
Step 2:Pickling:
Step 3:Fluxing:
Fluxing removes impurities from the surface of galvanized steel grating. An acidic solution is passed through the gratings to remove the impurities. Zinc chloride is the most commonly used flux. Besides providing a barrier against corrosion, zinc chloride also facilitates the removal of impurities. As a result, it is also known as a “fluxing agent”.
Step 4:Hot-Dip Galvanizing:
In hot-dip galvanizing, gratings are dipped in molten zinc baths. A zinc-iron alloy is formed on the surface of galvanized steel gratings when molten zinc bath is used. Therefore, hot-dip galvanizing is also known as “zinc-iron alloying.” It also provides corrosion resistance.
Step 5:Cooling:
In addition to hot-dip galvanizing, the gratings are cooled in air or water after they have been galvanized. By cooling the gratings, zinc-iron alloy is solidified on the surface. A galvanized steel grating that has been cooled in air is called an “air-cooled” grating. “Water-cooled” grating is galvanized steel grating that has been cooled in water.
Step 6:Passivation:
The passivation of galvanized steel grating is the only process flow that is not always performed. An acidic solution is used to passivate the gratings. Stainless steel gratings are required for this process. Passivation is primarily intended to eliminate contaminants from the exterior of gratings.
Step 7:Packaging(1 days)
Packing steel gratings requires special care and attention to avoid damage during transportation. We use high-quality packing materials to avoid damage during transportation. Fill the gaps between each grate with packing material such as styrofoam peanuts or bubble wrap, and wrap each grate in a layer of plastic film. Place the grates in a box or crate. Put a date and contents label on the box or crate and seal it with tape. Steel grates can be protected from corrosion and rust by following these packing tips.
