Post Heating in Welding Process: Preheating involves heating the base metal just the region surrounding the joint, to a specific desired temperature called as preheat temperature. Therefore, In this Article, I will be explaining the Post Heating in a detailed manner.
Why Post heating in Welding is necessary?
- Post heating is done in order to relieve further residual stresses present in the weld pool after heat treatment process also.
- If post heating is not done,then residual stresses develops as cracks and propagates throughout, resulting in the failure of the material.
- Therefore Preheating and Post heating must be done during welding.