Groove flank roughness profile
The joint flank roughness is the ratio between the actual and ideal joint grip. A roughness factor too high can lead to stresses that cause cracks or weld defects.
Physico-chemical mechanism of action
The joint flank roughness describes the ratio between the actual and ideal joint grip. A roughness factor too high means the actual joint area is smaller than calculated. This leads to stresses in the weld.
Metallurgical relevance & welding risks
A high roughness factor can lead to increased stresses and thus cracks or weld defects. This can be particularly dangerous for highly stressed components.
Workshop practice & instructions
To minimize joint flank roughness, the joint grips should be measured and maintained precisely. A roughness of 10% or less is generally acceptable. For special applications or highly stressed components, an even lower roughness should be ensured.