WELDING JOINTS (Types): Different types of edge preparation for weld joints


  "Welding Joints (Types): Different Types of Edge Preparation for Weld Joints "explains the five basic types of welding joints commonly used in the industry, based on guidelines from the American Welding Society. The video emphasizes how the design and preparation of these joints affect both the quality and cost of the welds. 

Here are the key points:

1. Butt Joint:

   - Two metal pieces are placed on the same plane and welded along the edges.

   - It's widely used in the fabrication of structures and piping systems.

   - Variations include square, bevel, V, U, and J joints, which serve different purposes depending on the required weld strength and appearance.

   - Edge preparation improves weld strength and penetration.

2. T-Joint: 

   - Created when two metal pieces intersect at a 90-degree angle, forming a T shape.

   - It's a type of fillet weld commonly seen when welding pipes or tubes onto base plates.

   - Types of T-joints include plug welds, fillet welds, and bevel groove welds.

3. Corner Joint

   - Similar to T-joints but positioned in the corner, forming an L shape.

   - Common in sheet metal industries for applications like frames and boxes.

   - Variants include V-groove, U-groove, and bevel groove joints.

4. Lap Joint

   - Formed by overlapping two pieces of metal, often used to join metals of different thicknesses.

   - Commonly applied in sheet metal welding.

   - Welds can be placed on one or both sides.

5. Edge Joint

   - The edges of two pieces are placed together and welded along the same edge.

   - Often used when metal plates are bent to form angles.

   - These joints are prone to corrosion and require care to avoid defects like slag inclusion or porosity.


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