POST WELD HEAT TREATMENT
Post Weld Heat Treatment (PWHT) is a term that refers to any heat treatment that is applied to a material after welding. The process is often used to improve the properties of the weldment. In most cases, the goal of PWHT is to increase the resistance of the material to brittle fracture by relaxing residual stresses which can occur in weldment due to restraint by the parent metal during weld solidification.
- Weld inspection – Structural / Piping
- Casting / Forgings / Valves
- Pre-Heating / Post Weld Heat Treatment/Normalizing
- Resistance Method / Induction Method