Ous drive roll kits refer to, Acessories section, Accessories – Lincoln Electric WIRE-MATIC 255 SVM 119-A Manuel d'utilisation

Page 33: Drive roll kits, K468 8” spool adapter, K363p readi-reel adapter

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ACCESSORIES

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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.

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

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

Set the procedure for the metal thickness to be
welded.

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.

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

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.

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

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.

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

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

Set the procedure for the metal thickness to be
welded.

Close trigger and hold it closed for length of seam.

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.

DRIVE ROLL KITS

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

3/64” (1.2mm) ALUMINUM FEEDING
KIT (K673-1)

Provides gun and wire drive conversion parts to weld
with 3/64” (1.2mm) aluminum wire. 5356 alloy alu-
minum wire is recommended for best push feeding
performance.

Kit includes drive roll and incoming guide tube for the
wire drive, and 45

gun tube, liner and two contact tips

for the gun, along with S21529 installation instructions.

K468 8” SPOOL ADAPTER

The K468 Spool Adapter permits the use of 8” Spools
on the Wire-Matic 255 spindle.

K363P READI-REEL ADAPTER

The K363P Readi-Reel Adapter mounts to the 2” spin-
dle. It is needed to mount the 22-20 lb. Readi-Reels.

WIRE-MATIC 255