How To Not Warp Metal When Welding. Reduce warpage by providing less leverage for the shrinkage forces to pull the plates out of alignment. Heating caused the metal to expand and stay that way.
This is especially helpful if youre welding in an area that is very critical and could lead to oil canning. You will have to grind your welds flat so be careful not to do more warping then. Welding on both sides of the plate offsets one shrinkage force with another to minimize warpage Figure 4.
The best way to reverse it is to hammer on-dolly on the weld to stretch the metal back out.
This is especially helpful if youre welding in an area that is very critical and could lead to oil canning. Also just weld a bit at a time dont do all the seams on the square at the same time do one seam on the right leg then do one seam on the left leg. Welding on both sides of the plate offsets one shrinkage force with another to minimize warpage Figure 4. Generally the skip-welding technique is the best way to distribute heat in an even manner.