Aluminium Castings

Aluminium casting processes are classified as Ingot casting or Mould casting. During the first process, primary or secondary Aluminium is cast into rolling ingot (slab), extrusion ingot (billet) and wire bar ingot, which are subsequently transformed, in semi- and finished products.
The second process is used in the foundries for producing cast products. This is the oldest and simplest (in theory but not in practice) means of manufacturing shaped components.
High-pressure die-casting is a process we use to make aluminum die cast parts. We inject molten aluminum alloy metal under pressure into a steel die to produce aluminum parts. Die-casting is a very inexpensive aluminum part manufacturing process.
When the molten metal is injected in the mould, the metal solidifies at a very fast rate. The metallurgical structure and different metallic phases have not the time to find equilibrium in the material. After the part has cooled down to room temperature, the ageing process in the metallic structure is starting. The different phases begin to move to their equilibrium state. With this movement, internal stresses are relaxed resulting in loss of hardness, loss of tensile strength properties and increase of ductility (elongation propertie