What is prohibited in the web and base areas of a thermite weld?

In the context of thermite welding, welding repairs are prohibited in the web and base areas due to the critical structural integrity required in these regions. The web and base areas are designed to support significant loads, and any alterations or repairs made in these sections could compromise the overall strength and stability of the welded components. When a weld is performed, it creates a specific metallurgical bond that is intended to be uniform and intact. Introducing welding repairs in these critical areas could lead to inconsistencies, potential defects, or weaknesses, which can result in structural failure under load.

Moreover, the thermite welding process itself is designed to create a strong, high-temperature bond. Disturbing this area with additional welding can alter the heat-affected zone and negatively impact the existing weld material properties. Therefore, it is essential to maintain these areas without any repair interventions to ensure safety and structural integrity.