An edge joint in welding is a joint configuration where the edges of the metal pieces are brought together side-by-side and welded along the joint.
In this type of weld joint, the metal surfaces are specifically placed together so that the edges are even. This arrangement allows the weld to primarily involve fusing the edges of the components.
How Edge Joints Are Formed
The basic setup for an edge joint involves aligning the edges. However, flexibility exists in the preparation:
- Flat Edges: The simplest form is when the edges are simply placed flush against each other.
- Bent Edges: As highlighted in welding practices, one or both plates may be formed by bending them at an angle. This pre-shaping can create a groove or channel along the joint line, which is then filled with weld material.
Purpose of a Weld Joint
Regardless of the specific configuration like an edge joint, the overarching goal remains the same:
- Joining Parts: The primary purpose is to securely connect two or more pieces of metal.
- Stress Distribution: Critically, the design and execution of any weld joint, including an edge joint, aim to ensure that the stresses are distributed effectively across the joined area, preventing premature failure under load.
Edge joints are typically used for joining sheet metal or plates where the stresses on the joint will be relatively low. They are often less strong than other joint types like butt or fillet joints when used for high-stress applications.
