Casting aluminum alloy is an aluminum alloy in which molten metal is filled into a mold to obtain various shapes of parts. It has the advantages of low density, high specific strength, good corrosion resistance and casting processability, and less restricted by the structural design of parts. Divided into Al-Si and Al-Si-Mg-Cu-based medium-strength alloys; Al-Cu-based high-strength alloys; Al-Mg-based corrosion-resistant alloys; Al-Re-based heat-strength alloys. Most of them need heat treatment to achieve the purpose of strengthening the alloy, eliminating the internal stress of the casting, stabilizing the structure and the size of the parts. It is used to manufacture beams, gas turbine blades, pump bodies, pylons, hubs, intake lips and engine casings. It is also used in the manufacture of automobile cylinder heads, gearboxes and pistons, instrument housings and turbocharger pump bodies.
Cast aluminum alloy has good casting properties and can be made into parts with complex shapes; it does not require huge additional equipment; it has the advantages of saving metal, reducing costs, and reducing man-hours, and is widely used in aviation and civil industries. It is used to manufacture beams, gas turbine blades, pump bodies, pylons, hubs, intake lips engine casings. It is also used in the manufacture of automobile cylinder heads, gearboxes and pistons, instrument housings aturbocharger pump bodies.