Weld Toe Defect
Weld transition defects occur when the welding process is uneven and alters the composition or structure of the metal at the transition to the parent material. This can lead to notches, deformation, or corrosion.
Physicochemical Mechanism of Action
During welding, the composition and structure of the metal change at the transition from base material to weld. Irregular processes can lead to uneven stresses, deformations, or chemical reactions.
Metallurgical Relevance & Risks in Welding
Weld transition defects can cause notching, corrosion attack, and deformation of the weld. These defects reduce mechanical properties and increase the risk of cracking or failure under load.
Workshop Practice & Action Guidelines
To avoid weld transition defects, ensure a consistent welding process. Keep temperature and voltage stable. Use appropriate shielding gas mixtures and optimize welding parameters like current and travel speed.