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Warpage due to welding can be significantly reduced by employing skip or step welding techniques. This method involves welding in a non-continuous manner, which helps to control the heat input into the welded materials. By welding at intervals rather than continuously along the entire seam, the heat is distributed more evenly, reducing the potential for thermal expansion and contraction that often leads to warpage.

As the heat is applied in discrete sections rather than along the full length, it allows the material to cool in stages, minimizing the stress and distortion that can occur when large areas are heated and then cooled uniformly. This approach not only limits the amount of heat entering the metal at any given moment but also helps maintain the geometry and dimensional accuracy of the components being welded, leading to a better finished product.

While options like increasing amperage or adjusting polarity can impact the welding process, they do not directly address the issue of warpage in the same effective manner as using skip or step welding to manage heat input.