Steel slabs are the second stage in steel production. They are hot-rolled and taken out directly during the casting process of steel. Steel slabs are highly malleable and flexible with square cross sections whose production area is less than 36 square inches (230 square centimeters). Steel slabs belong to semi-finished casting products of whom final products involve bar, pipe and wire products.
Rebars are made of tightly rolled steel slabs.
Steel slabs come from melting workshops which then produce rebar through a rolling mill line. The process is as follows:
1. Bring the steel raw materials into the melting workshop and melt them by heating, but carefully consider the necessary material properties and the hardness, toughness and corrosion resistance of the additives according to the chemical content and additives;
2. Produce the steel slab by technique.
3. The steel slab is then transported to the rolling plant and goes through a series of production processes.
4. Place the billet in a furnace and heat it to a certain temperature for rolling.
5. The steel slab then passes through the mill, where vertical and horizontal racks are responsible for rolling the steel slab to the correct size.
6. The steel traveling at a very high speed reaches the guide rail and is transferred to a heating furnace for quenching.
7. After the addition of thermal conductive adhesive, the steel goes through a shear machine and is cut into a billet usually of 12m in length.
8. The steel goes into the cooling bed for cooling from there.
9. The final site is the bundling and stacking area, where the rebar is bundled and stacked before being transferred to the storage yard where it is ready to be sold to customers.