Longitudinal Weld Discontinuity
Longitudinal weld defect is an irregular thickness distribution along the weld that disrupts the component's load capacity parallel to the weld. This can lead to build-up and cracks.
Physical-Chemical Mechanism of Action
A longitudinal weld defect arises from uneven stress distribution or irregular melting processes during the welding process. This leads to an uneven thickness distribution along the weld.
Metallurgical Relevance & Welding Risks
The longitudinal weld defect can lead to inclusions and cracks in the part structure. It disrupts load transfer parallel to the weld, which can be dangerous especially under high loads.
Workshop Practice & Action Guidelines
To avoid longitudinal weld defects, ensure a uniform melting process and optimize welding parameters such as temperature and voltage. If defects are detected, the weld must be inspected and, if necessary, repaired or re-welded.