Linde BOC RAPTOR 250R MIG Operating Manual page 37

37
BOC RAPTOR 200C & 250R MIG Operating manual
Electrical stickout Travel speed
Short Normal Long Slow Normal Fast
Slow Normal Fast
Short Normal Long
When welding fillet welds the torch should be positioned at an
angle of 45° from the bottom plate with the wire pointing into the
fillet corner. Welding is still performed in the push technique.
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 37-38.