Welding Sequence
A welding sequence plan specifies the order in which welds on a component are carried out. This prevents distortion and minimizes residual stresses, increasing mechanical strength.
Physical-Chemical Mechanism of Action
A welding sequence plan governs the order of the welds. This prevents uneven stresses from building up and causing distortion. The correct sequence ensures the metal cools evenly and no local stress areas develop.
Metallurgical Relevance & Risks in Welding
Incorrect welding sequences can lead to distortion, which impairs mechanical strength. It can also cause residual stresses that lead to cracks and wear. An improperly executed plan increases the risk of hot cracking and weld defects.
Workshop Practice & Action Instructions
When creating a welding sequence plan, keep the following points in mind:
• Start with the outer welds and work inward.
• Avoid the build-up of uneven stresses. This can be achieved through careful planning.
• Pay attention to cooling times and temperature profiles in the weld zone.
• Use welding sequence planning software to create the optimal plan.