Lincoln Electric SVM 117-A Drive Roll Kits, To Make Spot Plug Welds, To Make a Stitch Weld

C-7 ACCESSORIES C-7

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MAKING SPOT AND STITCH WELDS WITH TIMER KIT INSTALLED

TO MAKE SPOT PLUG WELDS:

The SPOT WELD MODE is used to make spot plug welds when continuous welds are not needed or to hold thin sheet metal together prior to stitch welding or continuous welding.

Plug welds are made by using a punch to make a 3/16" (5mm) diameter hole in the top sheet and arc welding through the hole into the back sheet.

1.Punch 3/16" (5mm) holes in the top sheet.

2.Set the SPOT/STITCH ON-TIME control to approximately 1.2 seconds.

3.Set the procedure for the metal thickness to be welded.

4.Install spot weld nozzle (if available) on gun and press it against the top sheet so the top and bot- tom sheets are tight together.

5.Close trigger and hold it closed until the arc goes out.

a.If a spot weld nozzle is not used, smoother welds will result by moving the welding wire in a small circle during the weld.

TO MAKE A STITCH WELD:

The STITCH WELD MODE is used to weld thin mater- ial when warpage and burn through are a problem. Proper adjustment of the Spot/Stitch On-Time, Stitch Off-Time, and arc travel speed permits welding thin sheet metal with small welds, minimum distortion, and no burnthrough.

1.The SPOT/STITCH ON-TIME KNOB sets welding time.

a.Start with a dial setting of 0.5 seconds. Raise setting to increase penetration and weld size. Lower setting to reduce burnthrough and dis- tortion.

3.Set the procedure for the metal thickness to be welded.

4.Close trigger and hold it closed for length of seam.

a.Hold gun in one place during ON time and move gun just beyond edge of molten metal during OFF time.

NOTE: For smoothest welds on thinner metal, point gun slightly toward the direction of travel.

ADJUSTABLE GAS REGULATOR AND HOSE KIT (K586-1)

The kit can be used with CO2 or Argon blend gas. It includes a cylinder pressure gauge, a dual scale flow gauge, and a gas hose to connect the regulator to the WIRE-MATIC 250 gas inlet.

DRIVE ROLL KITS

The following drive rolls and Magnum 250L gun and cable parts are available to feed different sizes and types of electrodes.

Steel Wire Sizes:	Part Number
.025 - .035" (0.6-0.9mm)	M14932
.030 - .045" (0.8-1.2mm)	M15809
.045" Cored (1.2mm)	S14541-052 (2 Req’d)
Aluminum Wire Sizes:
3/64" (1.2mm)	S17092-3/64A

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2.The STITCH OFF-TIME KNOB sets off time between welds.

a.Start with a dial setting of 0.5 seconds. Raise setting to reduce burnthrough. Lower setting to make weld flatter and smoother.

WIRE-MATIC 250