CASTING OF ALUMINIUM
Primary aluminium is alloyed with other elements such as copper, manganese and silicon for additional strength, corrosion resistance and other properties. These are then cast into billets, remelt ingots, slabs, and rods and other castings for further processing.
These log-shaped castings are produced in various diameters and lengths using a vertical direct chill process. They are used for producing extrusions, also known as profiles, that find major end use in construction, industrial and transportation purposes, as well as for forging purposes in automotive industries.
These cuboid shaped ingots are the input to the rolling process and are produced using a similar technique to billet. Slab is used to produce rolled aluminium products.