Linde BOC Smootharc Advance MIG 425R Operating Manual page 55

BOC Smootharc Advance III MIG 425R & 555R Operating manual 55
Electrical stickout Travel speed
Short Normal Long Slow Normal Fast
Slow Normal Fast
Short Normal Long
Electrical stickout
The electrical stickout is the distance between the end of the contact tip
and the end of the wire. An increase in the electrical stickout results in an
increase in the electrical resistance. The resultant increase in temperature
has a positive influence in the melt-off rate of the wire that will have an
influence on the weldbead profile.
Influence of the change in electrical stickout length on the weldbead
profile.
The travel speed will have an influence on the weldbead profile and the
reinforcement height.
If the travel speed is too slow a wide weldbead with excessive rollover
will result. Contrary if the travel speed is too high a narrow weldbead with
excessive reinforcement will result.
Recommendation about travel speed are contained in the gases tables found
on pages 36-37 of this manual.