The Main Purpose Of Hot
Hot's purpose has three aspects:
1. Reduce metal deformation and resistance, thus reducing the deformation of bad materials required forging force, so that the tonnage of forging equipment greatly reduced;
2. Change the casting structure of ingot, after recrystallization in hot forging process, the coarse casting structure becomes the new microstructure of fine grains, and reduces the defects of the cast structures and enhances the mechanical properties of the steel.
3. Increasing the plasticity of steel is particularly important for high alloy steels that are brittle and difficult to forge at low temperatures.