Читать книгу Designing Weldments - Группа авторов - Страница 44

Corrosion is an electrochemical reaction by which the metal deteriorates to its natural state. The deterioration is initiated and affected by the environment the metal is placed, or the environment around it.

Different metals have different resistance to corrosion, this resistance is further affected by the environment. The selection of specific metal to serve in specific environment requires that the weld also meets those corrosion resistant properties. Careful consideration is required in selection of welding electrode/welding wire, and impact of heat on the weld and HAZ of the base metal being welded.