It is essential that welders understand the importance that the heat during any welding process plays to ensure the integrity of welded structures.
Heating of the joint during the welding process, and the speed of its subsequent cooling, introduces many localized stress into the structure, that can be harmful These stresses can lead to joint cracking, distortion and brittleness of the welded joint or associated parent material, and therefore heating and cooling needs to be properly managed.

This course is one Module:

6-2 Pre-Heat and Post Weld Heat Treatment