Welding sequence
The welding sequence is the specified temporal and spatial order of weld beads to control thermal stresses and component distortion.
Physicochemical mechanism of action
The welding sequence regulates the order of welding operations to ensure uniform deformation of the material and minimal generation of thermal stresses. This is achieved by performing the weld beads in a specific pattern and time interval.
Metallurgical relevance & risks in welding
An incorrect welding sequence can lead to non-uniform deformation of the material, which in turn leads to thermal stresses and possible cracks or grain formation in the weld. This can affect the strength and service life of the components.
Workshop practice & instructions
To ensure an optimal welding sequence, the weld beads must be executed in the specified order and time intervals. This can be achieved by using special welding programs or manual control. It is important to follow the temperatures and times for each bead phase exactly to ensure uniform deformation and minimal stresses.