Double-V-groove central land
A double-V groove with a root face is a special weld joint consisting of two parallel V-grooves. This design increases the strength and deformation capacity of the weld.
Physical-Chemical Mechanism of Action
A double-V groove with a root face consists of two parallel V-grooves, each groove being welded independently of the other. This results in an increased fusion area and improves the mechanical connection between the weld parts.
Metallurgical Relevance & Welding Risks
The double-V groove gives the weld higher strength and improves its toughness, as it offers two independent fusion processes. However, a faulty welding procedure can lead to uneven deformation or groove defects that can compromise the overall result.
Workshop Practice & Instructions
To successfully produce a double-V groove with a root face, it is important to ensure careful preparation of the weld parts. The groove thickness should be uniform and the welding direction should be parallel to the stress direction. During the welding process, temperatures and times should be strictly followed to ensure a homogeneous fusion.