Expanded Metal, Thick Sections of Metal, Gouging

•The .035” (0.8mm) nozzle may be used for a fine cut. Larger nozzles will work and provide longer life at the expense of a larger cut.

•Do not allow the torch cable or body to contact hot surface.

•The best quality cut is obtained by reducing the current to a level that is adequate for the maxi- mum travel speed.

•Aluminum, copper and other nonferrous metals typically require more current than the same thickness of steel. Treat these as a thicker sec- tion of steel if good results are not obtained.

Expanded Metal:

Output set near mid-range.

•Cut it as you would light gauge sheet metal.

•Expanded metal is pilot arc intensive. After about 30 seconds of cutting, the pilot arc will change from a bright continuous arc to a discon- tinuous one which will sputter slightly. It will stay in this mode as long as metal has been cut in the previous 5 seconds. If metal is not cut in the previous 5 seconds, the arc will shut off and the machine will go into postflow.

•If the trigger is continuously pressed and released to obtain the bright pilot arc for long periods of time, the machine will go into pilot arc duty cycle limit. This is a 20 seconds out of 80 seconds pilot duty cycle. The pilot arc is dis- abled in the limit period. Pilot arc duty cycle limit is indicated by alternately flashing “OUT- PUT ON” and “FAULT” LED’s.

•Placing a thin piece of scrap sheet metal above the area to be cut and cutting through both can make the job easier.

•Do not allow the torch cable or body to contact hot surfaces.

Thick Sections of Metal

Output set above mid-range.

•The best quality and consumable life will be obtained by holding the torch nozzle off the sur- face about 1/8” (3.2mm). Output control should be sent in the red range only. Do not touch the nozzle to the work or carry a long arc.

•Use the S24114 Drag Cup to protect the torch. The only reason not to use the Drag Cup when

the output control is in the blue or red regions is in special tight corners. Always hold at least a 1/8” (3.2mm) standoff in those situations and use the S18817 shield cup.

•Set the current to the minimum necessary to make the cut.

•Use the .052” or .042” (1.2 or 1.0mm) nozzle size. DO NOT use the .035” (0.8mm) nozzle.

•Pierce the plate by slowly lowering the torch onto it at an angle of about 30° to blow the dross away from the torch tip and slowly rotate the torch to a vertical position as the arc becomes deeper.

•Where possible, start the cut from the edge of the workpiece.

•Keep moving! A steady speed is necessary. Do not pause.

•Do not allow the torch cable or body to contact hot surfaces.

Gouging:

Output set to maximum.

•Use the gouging nozzle S18497-4

•Use the Shield Cup.

•Bring the torch slowly towards the work at about a 30° angle as if piercing the plate. Blow the molten metal away from the torch.

•Do not touch the nozzle to the work.

•The air pressure may be raised to about 75 psi (517 kPa) to aid in metal removal.

•This process will blow a lot of molten metal and dross. BE CAREFUL! Blow the dross away from the torch, away from the operator and away from flammable objects.

•Do not allow the torch cable or body to contact hot surfaces.

•Performance is similar to air carbon arc gouging with a 1/8” (3.2mm) carbon electrode.

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60 specifications

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