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→Percussion Welding
==== Percussion Welding====
This process of high current arc discharge welding required the contact material and carrier to have two flat surfaces with one having a protruding nib. This nib acts as the igniter point for the high current arc <xr id="fig:Percussion welding (schematic)"/> <!--(Fig. 3.11)-->.
<figure id="fig:Percussion welding (schematic)">
[[File:Percussion welding (schematic).jpg|right|thumb|Percussion welding (schematic)]]