What happens if moisture is present during the welding process?

Moisture presence during the thermite welding process can significantly impact the quality and safety of the weld. When moisture is present, especially in the form of water or humidity, it can lead to a dangerous reaction when it comes into contact with the molten metal created during the welding process. This reaction can cause rapid vaporization, which generates steam and creates pressure. Consequently, this pressure can force molten metal to be ejected from the weld area, posing serious risks to the welder and potentially compromising the integrity of the weld itself.

Understanding this chemical reaction underscores the importance of maintaining a dry environment before and during the welding process to ensure both safety and the optimal formation of the weld.