Objectives
After studying this chapter, you will be able to:
Identify different types of welds used with
various joints.
Read and draw common welding symbols.
Discuss advantages and disadvantages of different
weld joints.
List factors involved with joint design.
Joint Types
The American Welding Society defines a joint as
“the manner in which materials fit together.” As shown in
Figure 6-1, there are five basic types of weld joints:
Butt joint.
T-joint.
Lap joint.
Corner joint.
Edge joint.
Joint Preparation
Weld joints may be initially prepared in a number of
ways. These include:
Shearing.
Casting.
Forging.
Machining.
Stamping.
Filing.
Routing.
Oxyacetylene cutting (thermal cutting process).
Plasma arc cutting (thermal cutting process).
Grinding.
Final preparation of the joint prior to welding will be
covered in the chapters that detail the welding of specific
materials.
Weld Types
There are various types of welds that can be made in
each of the basic joints. They include:
Butt joint, Figure 6-2.
Square-groove butt weld.
Bevel-groove butt weld.
V-groove butt weld.
J-groove butt weld.
U-groove butt weld.
Flare-V-groove butt weld.
Flare-bevel-groove butt weld.
T-joint, Figure 6-3.
Fillet weld.
Plug weld.
Slot weld.
Bevel-groove weld.
J-groove weld.
Flare-bevel-groove weld.
Melt-through weld.
Weld Joints
and Weld Types
6 6 6
CHAPTER
57
Butt
T
Lap Corner
Edge
Figure 6-1. The five basic types of joints used in welding.
Previous Page Next Page