What is "weld shrinkage"?

Weld shrinkage refers to the reduction in size of the weld joint as it cools and solidifies. During the welding process, the molten metal expands due to the heat, but as it transitions from a liquid state to a solid state, it contracts. This contraction results in the weld area decreasing in size, which is a critical factor to consider for maintaining the integrity and fit of the welded components. Understanding weld shrinkage is essential for welders and engineers, as it can influence the overall dimensions, alignment, and performance of the final product. This phenomenon is important in ensuring that the fit-up of components remains within acceptable tolerances after welding.