Which technique helps maintain a consistent fillet along a patch seam on a door skin?

Which technique helps maintain a consistent fillet along a patch seam on a door skin?

• A. Long, continuous weave with constant speed
• B. A single long bead until completion
• C. A series of short beads with steady travel, maintaining angle and distance
• D. Randomly changing angle during the weld

Answer: (C)

Controlling heat input and bead geometry is essential when making a patch seam on a door skin. The best approach is a series of short beads with steady travel, while keeping a consistent angle to the seam and a constant distance from the surface. This method deposits weld metal in small, controlled amounts, so the fillet along the seam forms evenly, with uniform penetration and contour. The pauses between beads help the metal cool slightly, which reduces distortion in the thin door skin and keeps the patch aligned with the body panel. It also makes it easier to follow a curved seam and maintain a uniform fillet height from start to finish. Long, continuous weaving can overwork the skin, causing overheating, warping, or burn-through and makes it harder to maintain a smooth, even fillet along a curved seam. A single long bead concentrates heat in one area, risking distortion and poor control of the seam profile. Randomly changing the angle disrupts heat distribution and weld pool control, leading to an inconsistent fillet and an uneven seam.

Controlling heat input and bead geometry is essential when making a patch seam on a door skin. The best approach is a series of short beads with steady travel, while keeping a consistent angle to the seam and a constant distance from the surface. This method deposits weld metal in small, controlled amounts, so the fillet along the seam forms evenly, with uniform penetration and contour. The pauses between beads help the metal cool slightly, which reduces distortion in the thin door skin and keeps the patch aligned with the body panel. It also makes it easier to follow a curved seam and maintain a uniform fillet height from start to finish.

Long, continuous weaving can overwork the skin, causing overheating, warping, or burn-through and makes it harder to maintain a smooth, even fillet along a curved seam. A single long bead concentrates heat in one area, risking distortion and poor control of the seam profile. Randomly changing the angle disrupts heat distribution and weld pool control, leading to an inconsistent fillet and an uneven seam.