Capacitor Discharge (CD) Stud Welding involves the same basic principles and metallurgical
aspects as any other arc welding procedure. When the weld gun is activated, a special precision
weld tip initiates a controlled electric arc from the welder capacitor bank which melts the end of
the stud and a portion of the base metal. The stud is held in place as the molten metal solidifies
instantly accomplishing a high-quality fusion weld.