A series of bead welds overlaid on the face of a joint
is called buttering, Figure 6-13. Buttered welds are often
used to join dissimilar metals. A series of overlaid welds
on the surface of a part to protect the base material is
called surfacing or cladding. Refer to Figure 6-14.
Welding Terms and Symbols
Communication from the weld designer to the
welder is essential to proper completion of most
weldments. Some of the common terms used to describe
parts of the weld joint are found in Figure 6-15. Other
60 Gas Metal Arc Welding Handbook
Figure 6-10. Various types of backing rings for pipe joints.
Figure 6-11. Plate butt weld with a fabricated backing bar.
Figure 6-12. Controlled weld penetration joint.
Figure 6-8. Joggle-type joint.
Figure 6-9. Tubular butt joint with a built-in backing bar.
Figure 6-13. Buttered weld joint face.
Figure 6-14. Overlaid welds, called surfacing or cladding,
protect the base metal from wear or contamination.