Most of the aluminum alloys used in automobile castings are aluminum-silicon alloys Aluminum castings are mostly produced by pressure casting and metal mold gravity casting.
The number of die castings accounts for more than 70%. Since they are used in many places, the performance requirements of each part are quite different.
Therefore, the grades and composition range of cast aluminum alloys used in automobiles is also very wide.
The engine system requires aluminum alloy with relatively high heat resistance or wear resistance, and needs to use heat-resistant or wear-resistant aluminum alloy.
However, automobile wheels and some building structures require aluminum alloys to have strong strength and toughness, and high-strength aluminum alloys need to be used.
Since various castings use different processing techniques, there are also different requirements for the process performance of aluminum alloys.
Therefore, the grades and compositions of cast aluminum alloys used in automobiles are very complex.
