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→Percussion Welding
==== Percussion Welding====
This process of high current arc discharge welding requires the contact material and carrier to have two flat surfaces with one having a protruding nib. This nib acts as the ignition 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|Figure 9: Percussion welding (schematic)]]