Setup For Tig Welding (Gtaw) With Lift Arc; Gas Selection - Forney 220 ST Pro Operating Manual

Stick/tig arc welder
Hide thumbs Also See for 220 ST Pro:
Table of Contents

Advertisement

Setup for TIG Welding (GTAW) with Lift Arc

Setting up the Equipment for TIG Welding (GTAW):
Lanthanated Tungsten recommended for use.
WARNING: TIG TORCH IS ALWAYS LIVE (ELECTRICALLY HOT).
Use caution and ensure the TIG torch is not in contact with or near conductive or grounded materials.
Connect the TIG torch cable to the NEGATIVE (-) DINSE SOCKET (9) of the welder.
Connect the ground cable connector to the POSITIVE (+) DINSE SOCKET (7) of the welder.
Ensure the ground clamp has a good connection to the workpiece and is connected on clean, bare metal (not rusty or
painted).
Connect the TIG torch gas line to the gas regulator (argon gas or argon/helium).
INERT GAS (ARGON OR ARGON/HELIUM) ONLY.
TURN ON GAS AT THE GAS REGULATOR, CHECK FOR GAS FLOW AND ADJUST FLOW RATE
AS NEEDED.
Fix the tungsten electrode so that it protrudes approximately ¼ inch from the torch nozzle.
Ensure the TIG torch is safely away from all conductive materials.
Switch the unit ON with the ON/OFF SWITCH.
Press the Process SELECTOR BUTTON (1) on the front panel to the correct position.
Set parameters with the SECONDARY PARAMETER KNOB/SELECTOR.
Set the amperage with the AMPERAGE ADJUSTMENT KNOB.
Press pedal or torch button and gas will flow.
Initiate the weld arc.
Use pedal or torch to adjust output amperage while working.
REMEMBER TO CLOSE THE VALVE ON THE GAS CYLINDER IMMEDIATELY AFTER ALL WELDING
IS COMPLETED.
Material
Polarity
Thickness
TIG
(GTAW)
DCEN
Diameter
-Recommend
DCEN
2%
Certiated
100%
Tungsten
Argon
(1.6mm)
Welding Tips:
Always weld clean, dry and well-prepared material.
Move the torch smoothly and steadily as you weld.
Avoid welding in very drafty areas. A weak, pitted and porous weld will result due to drafts blowing away the
protective welding gas.
Sharp bends or kinks in the welding cable should be avoided.
The diameter of the welding electrode should be approximately the same as the thickness of the metal to be welded.
The packaging of the welding electrode typically gives a recommended range for the welding current. Set the
amperage accordingly.

Gas Selection

Use 100% argon gas when TIG welding with mild steel or stainless steel.
NOTE: THIS MACHINE IS NOT AN APPROPRIATE POWER SOURCE FOR WELDING
ALUMINUM.
16
220 ST PRO TIG SET-UP CHART
1/16" (1.6mm)
Filler
Gas
Tungsten
Amperage
Cup
Diam
Diameter
1/16"
3/8"
1/16"
50-80
(#6)
(1.6mm)
(1.6mm)
3/32" (2.4mm)
Filler
Gas
Tungsten
Amperage
Cup
Diam
Diameter
1/16"
3/8"
1/16"
80-110
(#6)
(1.6mm)
(2.4mm)
WWW.FORNEYIND.COM
1/8" (3.2mm)
Filler
Gas
Tungsten
Amperage
Cup
Diam
Diameter
3/32"
3/8"
1/16:
85-120
(#6)
(1.6mm)
(3.2mm)
3/16" (4.8mm)
Filler
Gas
Tungsten
Amperage
Cup
Diam
1/8"
7/16"
3/32"
125-200
(#7)
(2.4mm)

Advertisement

Table of Contents
loading

Table of Contents