Castings, as an important process product in the field of metal processing, are parts with specific shapes and properties formed by pouring molten metal into a pre-designed mold and allowing it to cool and solidify.
The choice of materials for castings is crucial, directly affecting key properties such as strength, hardness, and corrosion resistance. Common casting materials include cast iron, cast steel, aluminum alloys, and copper alloys. Each material has its unique properties and applications. For example, cast iron has high strength and wear resistance, making it suitable for manufacturing parts that bear heavy loads; while aluminum alloys have low density and good corrosion resistance, and are widely used in aerospace, automotive manufacturing, and other fields.
When selecting materials, in addition to considering their basic properties, attention must also be paid to the material's purity, chemical composition stability, and heat treatment performance. High-purity materials reduce the impact of impurities on part performance; chemically stable materials ensure stable performance under different environments; and good heat treatment performance helps to further improve the part's performance through heat treatment processes.