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WELDING TSB Revision BASE OF BODY REPAIR 9-11 Torch angle and welding technique convex shape. The angle of the torch should be 15 − 30 degree angle for either technique, and the tip should be maintained at a distance − 10 mm (0.2 − 0.4 inch) from the surface being welded. . Preventing warping 1. Backhand technique Because the direction for each weld pass and that for the 2. Symmetrical technique Because the welds are made in symmetrical positions in 3. "Stepping stone" technique Because the welds are made at random positions, the NOTES REGARDING MIG WELDING Note the following notes regarding MIG welding. 1. The surface to be welded must be perfectly clean; be sure to remove any non-conductive 2. If the end of the wire forms into a ball, it will adversely affect the formation of the arc; cut the 3. Select a welding current to match the thickness of the panels being welded. 4. For continuous welding, maintain a constant weld speed and keep both the height and the width of AB301457 15 – 30˚ 15 – 30˚ FOREHAND BACKHAND AB AB200043 AB ANTI-WARP WELDING TECHNIQUES 1. 2. 3. BACKHAND TECHNIQUE SYMMETRICAL TECHNIQUE "STEPPING STONE" TECHNIQUE 5 4 3 2 1 5 4 3 2 1 4 3 2 1 |