Component Inter Technologies
2426 Perry Highway
Hadley, PA USA 16130

Tel: 724-253-3161
Fax: 724-253-3853
Email:

E-mail: How Can We Help?

Resistance and Percussive Arc Welding
- page 7

SMEAR: The copper cladding that is dragged across the cutoff end of the dumet during the cutting of the slug (See Figure 10A below).
WELD KNOT: The weld fillet around the wire to slug interface (Figure 10B).
AXE WELD: An incomplete weld fillet between the slug and tail wire that appears to have been cut by an axe (Figure 10C).
.
BREAKOFF / CUTOFF (BO/CO): Two effects of the cutting of the dumet slug. The breakoff is the uncut portion of the slug. The cutoff is the smooth cut.
TILT: The degree of inclination of the slug to the wire.
BURR: The deformed metal at each end of the cut slug caused by wear in cutter tooling.

TIR (Total Indicated Runout): The measure of concentricity between the wire and the slug as indicated
STARTER NIB: The small point cut onto one work piece that is burnt off by the initial welding current and used to start the welding arc.
Next: Pros and Cons of Resistance Welding and Percussive Welding