We hope by now you may have understood that aluminium is casted. If you need to create an aluminium casting, you should first develop a mould of the part that is to be created. The mould is formed using sand as the moulding material and the pattern is then pushed into it which leaves the impression of the part that is to be casted. Upon the completion of the mould, the molten aluminium is then poured into the mould which is left to cool and harden. After the solidification of molten aluminium, the mould is separated, and the required part is obtained.
Conversely, biller aluminium is created in an entirely different way. It is important to understand what a billet is before we study how a billet aluminium part is created. A billet is nothing but a solid aluminium block (or any other material) having the size depending upon what you’re looking for. The larger the required part, the larger is the billet. In contrast to casting, billet parts are formed by removal of extra material from the billet; basically, the part is obtained out of solid aluminium.
Whilst both methods are aimed towards producing the same exact part, each method has its own pros and cons.
Billet has short time leads, cost-effective in small quantities, higher precision level and stronger parts structurally. Disadvantages include increased costs with increase in quantity, cost-intensive design to machine, and inability of few designs to machine from solid billet.
Advantages of Casting include lowered costs with increase in quantity, ability to produce parts of every size and capability to produce distinctly shaped parts. At the same time, casting is somewhat labour intensive, has lowered dimensioned accuracy, irregular surface finish, in addition to defects or imperfections in the metal.