Lincoln Electric QUICK WELD IMT776-A Manual De Operación página 18

OPERATION
FCAW -Gasless (Flux Cored)
Welding Wire .035 Lincoln NR-211-MP (Innershield Cored Wire)
.035 (0.9mm) - Lincoln Part No. KH712
Contact Tip
Drive Roll 0.9mm Knurled groove - Lincoln Part No. KP2243-035
Remember: Remove the contact tip prior to loading wire
Keep tension on the wire to prevent unspooling.
Loading The
1. Cutoff the bent portion of the wire and straighten the first 4" for feeding into rolls and gun.
Wire
2. Release spring loaded pressure arm and rotate the Idle Roll Arm away from Drive Roll.
3. Thread wire through the guide tube, over drive roll and into gun liner. Close Idle Roll arm.
The suggested Wire Feed Speed settings in the table below are based on a midrange wire tension
Wire Feed
setting. The tension may be changed if required to improved wire feeding; however, the WFS setting may
Tension
have to be adjusted from the values in the table below.
Steel Thickness
18 Ga Steel
Suggested
16 Ga Steel
Settings For
14 Ga Steel
Welding
12 Ga Steel
1/8" Steel
Weld at a Steady Pace
Do NOT weave the arc, neither forward, backward, or sideways
Helpful Hints
Remove Slag with the Chipping Hammer to expose weld
For Horizontal Weld Joints, remember: "Drag if there s Slag"
Refer to Manual for Troubleshooting Poor Weld Quality
Direction of
Horizontal: "Drag"
Welding AND
Angle of Gun
relative to Weld
Direction
Proper Gun
Fillet Joint
Angles for
common Weld
Joint Types
Maintain an electrode Stickout
Electrical
of 3/8" while welding.
Stickout
OPERACIÓN
Table B.1 is on the inside case door of this machine for quick
reference of welding procedures.
TABLE B.1
Wire Feed Speed Heat Range
9 Low - 1
9 Low - 2
9 High - 1
9 High - 2
9 High - 2
Vertical Up
Vertical Down
Butt Joint Lap Joint
CONTACT TIP
ELECTRODE
3/8
B-7
FONCTIONNEMENT
REPLACEMENT PARTS LIST
Use Genuine Lincoln Parts for Optimum Performance
Contact Tip (.035") KH712 (.035" / 0.9 mm)
Drive Roll KP2243-035
Nozzle M16294
FCAW Wire Lincoln .035 NR-211-MP
FACE SHIELD G3364
FILTER LENS G3364-C
CLEAR COVER LENS G3364-D
Warnin g
Use of this unit on thicker materials than recommended may result in
poor welds. The welds may "look" good, but may just be "sitting" on
top of the plate. This is called "Cold Casting" and will result in weld
failure.
Warnin g
When the welding power source is on and the gun trigger is
depressed, drive rolls, wire reel and electrode are ELECTRICALLY
HOT.