Heat conduction welding is characterized by low exposure depths of maximal one millimeter, and is mainly used for joining sheets with low material thickness.
With keyhole welding, the material is processed with very high beam intensities. Different to heat conduction welding, a metal vapor is here created in addition to the metal melt that partially displaces the melt and leads to the creation of a vapor capillary (keyhole). The method is characterized by high process speed.
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