Forging is a processing method that uses forging machinery to exert pressure on metal blank to produce plastic deformation and obtain forgings with certain mechanical properties, shape and size. It is one of two parts of the forging pressure (forging and stamping). Forging can eliminate defects such as loose metal casting in smelting process and optimize microstructure. At the same time, because the metal streamline is complete, the mechanical properties of forgings are generally superior to castings of the same material.
Features of aluminum alloy hot forging:
1. Reduce the metal deformation resistance, thus reducing the forging pressure required for the deformation of poor materials, and greatly reducing the tonnage of forging equipment;
2. Change the casting structure of the steel ingot, recrystallize in the hot forging process, and the coarse casting structure becomes a new structure of small particles to reduce the defects of the casting structure and improve the mechanical properties of the steel;
3. Improve the plasticity of steel, which is particularly important for some high alloy steels that are brittle and difficult to forge at low temperatures.