What type of weld is used to join two overlapping pieces of metal?

The lap weld is specifically designed for joining overlapping pieces of metal. In this type of welding, one piece is laid over the other, which allows for a strong joint due to the increased surface area that is fused together. This method is particularly advantageous in applications where strength and the ability to resist shear forces are crucial.

Unlike other types of welds, such as butt welds, which join pieces end-to-end, a lap weld is ideal when the pieces cannot be aligned edge-to-edge. It also allows for easier alignment and positioning of the pieces being joined. Additionally, the overlapping nature of a lap weld can mitigate issues with distortion commonly associated with other welding techniques, making it suitable for various fabrication processes in industries ranging from automotive to construction.

Understanding lap welds and their applications helps in selecting the right welding technique for specific projects, where factors like load-bearing capacity and joint appearance may influence the choice.