General properties of cast aluminum alloys.

General characteristics of cast aluminum alloys:

① Good fluidity to fill the narrow gap of the slot;

② Has a low melting point that is suitable for many other metals;

③ Good thermal conductivity, the thermal energy of molten aluminum is quickly transferred to the casting mold, and the casting cycle is short;

④ Hydrogen and other harmful gases in the melt can be effectively controlled through treatment;

⑤ When aluminum alloy is cast, there is no tendency for hot brittle cracking and tearing;

⑥ Good chemical stability and high corrosion resistance;

⑦ It is not easy to produce surface defects. The surface of the casting has good gloss and low surface roughness, and it is easy to carry out surface treatment;

⑧ Cast aluminum alloys have good processing performance and can be used for casting production using die molds, hard () molds, green and dry sand molds, investment molds, plaster mold castings, and molds. Vacuum casting molds, low-pressure and high-pressure castings, and semi-solid castings can also be used. , squeeze casting, centrifugal casting and other methods to produce various castings with different uses, varieties and specifications, and different properties.