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WARRANTY
Travel Speed
Travel speed is the rate that the gun is moved along the weld joint and is usually measured in mm per minute. Travel
speeds can vary depending on conditions and the welders skill and is limited to the welders ability to control the weld
pool. Push technique allows faster travel speeds than Drag technique. Gas flow must also correspond with the travel
speed, increasing with faster travel speed and decreasing with slower speed. Travel speed needs to match the
amperage and will decrease as the material thickness and amperage increase.
1. Too Fast Travel Speed
A too fast travel speed produces too little heat per mm of travel resulting in less penetration and reduced weld fusion,
the weld bead solidifies very quickly trapping gases inside the weld metal causing porosity. Undercutting of the base
metal can also occur and an unfilled groove in the base metal is created when the travel speed is too fast to allow
molten metal to flow into the weld crater created by the arc heat.
2. Too Slow Travel Speed
A too slow travel speed produces a large weld with lack of penetration and fusion. The energy from the arc dwells on
top of the weld pool rather than penetrating the base metal. This produces a wider weld bead with more deposited
weld metal per mm than is required resulting in a weld deposit of poor quality.
3. Correct Travel Speed
The correct travel speed keeps the arc at the leading edge of the weld pool allowing the base metal to melt sufficiently
to create good penetration, fusion and wetting out of the weld pool producing a weld deposit of good quality.
14. MAINTENANCE
Safety Matters
Risk of injury from electric shock
Cleaning machines that are not disconnected from the mains can lead to serious injuries!
- Disconnect the machine completely from the mains.
- Remove the mains plug.
- Wait for 5 minutes until the capacitors have discharged.
ELECTRIC SHOCK can kill
- Turn the input power OFF at he welding power source before installation or changing drive rolls
and/or guides.
- Do not touch electrically live parts.
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