aluminum alloy
Cast aluminum alloy is an aluminum alloy that is filled with molten metal to obtain parts of various shapes. It has the advantages of low density, high specific strength, good corrosion resistance and casting process, and small limitation by part structure design. It is divided into medium-strength alloys based on Al-Si and Al-Si-Mg-Cu; Al-Cu-based high-strength alloy; Al-Mg-based corrosion-resistant alloy; Al-Re-based hot-strength alloy. Most require heat treatment to strengthen the alloy, eliminate internal stress in the casting, and stabilize the structure and part size. It is used in the manufacture of beams, gas turbine blades, pump bodies, pylons, wheel hubs, intake lips and engine casings, etc. It is also used in the manufacture of cylinder heads, gearboxes and pistons of automobiles, the housing of instruments and meters, and the pump body of superchargers. Cast aluminum alloy.