What is the primary purpose of distortion control in welding?

The primary purpose of distortion control in welding is to maintain geometry and prevent structural failures post-welding. Distortion can occur due to the heat generated during the welding process, which can lead to warping, misalignment, or dimensional inaccuracies in the welded components. Controlling distortion is crucial to ensuring that the final assembled structure meets design specifications and maintains its intended functionality under load. This involves careful planning of the weld sequence, application of appropriate heat management techniques, and potentially the use of fixtures to hold parts in place during welding. By preventing distortion, welders help ensure the integrity and durability of the welds, thereby reducing the risk of structural failures that could arise from misalignment or compromised strength.