In-phase joint offset
Phase-identical groove displacement is a type of weld flaw where the groove pressure waves move parallel to the weld and cause stresses.
Physical-Chemical Mechanism of Action
Phase-identical joint displacement occurs when the weld pool is under pressure and the joint pressure waves move parallel to the weld. This leads to stresses in the weld.
Metallurgical Relevance & Welding Risks
These stresses can cause cracks or deformation of the weld, especially if the material is prone to stress formation. It increases the risk of hot cracking and reduces the mechanical properties of the weld.
Workshop Practice & Action Instructions
To avoid phase-identical joint displacement, the weld pool should be kept under as little pressure as possible. Optimal gas supply and a more stable process control pressure help with this. For heavy materials or in high-stress areas, careful process planning is essential.