1. Definition of forging
Forging is a kind of processing method that uses forging machinery to exert pressure on metal blank to produce plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. It is one of the two major components of forging (forging and stamping).
Forging can eliminate the defects such as cast porosity in the smelting process, and optimize the microstructure. At the same time, because the complete metal streamline is preserved, the mechanical properties of forgings are generally better than those of castings of the same material. For important parts with high load and severe working conditions in related machinery, forgings are mostly used, except for rolled plates, profiles or weldments with simple shape.
2. classification of forging
According to different production tools, forging technology can be divided into free forging, module forging, rolling ring and special forging.
According to forging temperature, forging technology can be divided into hot forging, warm forging and cold forging.
According to the movement mode of forging die, forging can be divided into rotary forging, rotary forging, roll forging, cross wedge rolling, ring rolling and cross rolling.