Which temperature condition describes hot forging?

Hot forging is characterized by the process being carried out at elevated temperatures, specifically above the recrystallisation temperature of the material being forged. This high temperature allows for several important benefits in the forging process.

When metal is heated above its recrystallisation temperature, it becomes more ductile, which means it can be deformed more easily without cracking or breaking. This increased ductility is crucial as it allows for more complex shapes and forms to be created during the forging operation. Additionally, hot forging can help to refine the grain structure of the metal, resulting in improved mechanical properties such as strength and toughness after the forging process.

Operating at temperatures above the recrystallisation threshold ensures that any work hardening that may occur during deformation is counteracted by recrystallisation, thus maintaining the material's formability. Therefore, this temperature condition is essential to achieving desirable outcomes in hot forging applications.