Aluminum alloy material quality requirements for aluminum ingots

First, the chemical composition must meet the standards and the standards of relevant technologies. In the ingot, the chemical composition must be evenly distributed and not biased, and the degree of segregation must meet the technical requirements.

Second, the ingot structure must be fine, dense, uniform, and meet the technical standards.

Fine refers to the small size of the cast crystals and the relatively fine structure within the crystals.

Dense means that there are no defects that destroy the continuity of the ingot, or there are very few defects that destroy the continuity of the ingot. These defects are looseness, pores, slag inclusions, oxide films, white spots, crystal layer splitting, cracks, which are all defects that destroy the continuity of the ingot.

Uniform refers to columnar crystal feather crystals, metal compound primary crystals, as well as light crystals, coarse suspended crystals, and coarse equiaxed crystals. These defects cause uneven organization, and the degree of unevenness should be within the required range.