Daihen varstroj VARMIG 231-i LCD, Owner'S Manual

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FLUX CORED ARC WELDING (FCAW)
This is an electric arc welding process which fuses together the parts to be welded by heating them with wan
arc between a continuous flux filled electrode wire and the work-piece. Shielding is obtained through
decomposition of the flux within the tubular wire. Additional shielding may be obtained from an externally
supplied gas or gas mixture. The process is normally applied semi automatically; however the process may be
applied automatically or by machine. It is commonly used to weld large diameter electrodes in the flat and
horizontal position and small electrode diameters in all positions. The process is used to a lesser degree for
welding stainless steel and for overlay work.
Position of MIG Torch
The angle of MIG torch to the weld has an effect on the width of the weld
The welding gun should be held at an angle to the weld joint. (See Secondary Adjustment Variables below)
Hold the gun so that the welding seam is viewed at all times. Always wear the welding helmet with proper filter
lenses and use the proper safety equipment.
CAUTION
Do not pull the welding gun back when the arc is established. This will create excessive wire extension (stick-out)
and make a very poor weld.
The electrode wire is not energized until the gun trigger switch is depressed. The wire may therefore be placed
on the seam or joint prior to lowering the helmet.