Fronius Laser hybride Instructions De Service page 71

As the weld pool is smaller than in the arc welding process, the heat input is restricted, and
there is thus a smaller heat-affected zone. This results in less distortion, which reduces the
amount of reworking needed. The arc process provides subsequent heat input. This has
the additional effect of tempering the laser-welded area of the workpiece. This diminishes
the hardness peaks, especially in the case of steel.
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