Forging according to the billet in the processing temperature can be divided
into Hot Forging Manufacturing Processes and cold forging. Cold forging is
usually done at room temperature, and hot forging is done at higher
recrystallization temperatures than the billet metal. Sometimes it will be in a
heating state, but when the temperature does not exceed the recrystallization
temperature, the forging is called warm forging. However, this division is not
completely unified in production.
The forging temperature range refers to a temperature interval between the
start of the metal and the final forging temperature. In order to prevent
overheating and overheating, the starting temperature and the final forging
temperature need to be determined properly. The basic method of setting up the
heating temperature is based on the iron carbon balance diagram of the steel.
The plastic resistance diagram and the recrystallization diagram of the
reference material are combined to determine the heating temperature.