Hot forging process is performed at extreme high temperatures (up to 1100°C for steel, 360°C to 520°C for Al-alloys, 700°C to 800°C for Cu-alloys). These temperatures are necessary to avoid strain hardening of the metal during deformation.
Advantages:
- It offers Good ductility.
- more flexible than cold forging, thus customized parts can be manufactured and excellent surface finish.
Limitations:
- Less precise dimensional tolerance.
- Cooling process must be carefully monitored.
- Risk of wrapage.
- Risk of reaction of job from atmosphere.