Abstract
Laser beam welded tailored blanks have been proved to be extremely beneficial in automotive industry through weight savings and a reduction in cost. The cost to manufacture tailored blanks could be greatly reduced if the rate of scrap parts is lowered and the welding speed is increased. In this paper, we report a study on tilted laser beam welding of dissimilar sheets using CO2 and YAG lasers. The experimental results show that the laser beam can be tilted in both sides of the weld seam to increase the gap bridging capability, but the beam incidence from the thin sheet side is more beneficial in raising overall welding speed.Laser beam welded tailored blanks have been proved to be extremely beneficial in automotive industry through weight savings and a reduction in cost. The cost to manufacture tailored blanks could be greatly reduced if the rate of scrap parts is lowered and the welding speed is increased. In this paper, we report a study on tilted laser beam welding of dissimilar sheets using CO2 and YAG lasers. The experimental results show that the laser beam can be tilted in both sides of the weld seam to increase the gap bridging capability, but the beam incidence from the thin sheet side is more beneficial in raising overall welding speed.
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