What Is The Difference Between Aluminium Casting And Aluminium Forging?
Casting and forging are different approaches to manufacturing. Aluminum forging is an aluminum product mainly used for forging. Die-cast aluminum alloys are cast aluminum alloys, except that they are mainly cast aluminum alloys by pressure casting. So, what is the difference between aluminum forging and aluminum die casting?
In casting, you melt the alloy, pour it into a mold which has the impression of the shape of desire. The alloy takes the shape & solidifies, retaining the shape. In simplest sense, that is casting.
When forging, you are impacting the alloy to its desired shape. This can be done without heating, but requires more power. Generally, metals are heated, to soften them. This is the traditional way, now more prevalent with use of machines. Technically , just hammering it to shape counts as forging.
Forged aluminum alloys include Al-Si-Mg-Cu alloy and Al-Cu-Ni-Fe alloy. Commonly used forged aluminum alloys include LD2, LD5, LD10 and so on. They contain many types of alloying elements, but their contents are less. Their thermoplastic properties are excellent, so the forging properties are excellent and the mechanical properties are also good. These alloys are mainly used for die forgings under load and forgings with complex shapes.
Casting aluminum alloys are classified into four major categories: Al-Si, Al-Cu, Al-Mg and Al-Zn. For cast aluminum alloys, in addition to the required mechanical properties and corrosion resistance, it should also have good casting performance. In casting aluminum alloy, the best combination of casting properties and mechanical properties is Al-Si alloy, also known as silicon aluminum.
Cast aluminum alloy has good casting performance, low density, excellent corrosion resistance, heat resistance and weldability; It is used to manufacture castings with complex shapes but low strength requirements, such as aircraft and instrument housings; Castings with complex shapes of strength, such as motor housings, cylinder blocks, fan blades, engine pistons, etc.
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6yAnd this does not only relate to aluminium alloys but many other alloys as well.