OPERATION
B4.9 B4.9
VANTAGE® 500
VANTAGE 500 SETTINGS WHEN USING THE K799
HI-FREQ UNIT
• Set the WELD MODE switch to the 20-250 setting
(TIG).
• Set the IDLER switch to the HIGH position.
• Set the WELDING TERMINALS switch to the WELD
TERMINALS ON position. This will close the solid
state contactor and provide an always “hot” electrode.
NOTE: This is necessary because the K799 circuitry
with respect to the #2 and #4 leads does not
provide the proper signal to open and close the
solid state contactor in the Vantage 500.
VANTAGE 500 SETTINGS WHEN USING A K930-[ ]
TIG MODULE
• Set the WELD MODE switch to the 20-250 setting
(TIG).
• Set the IDLER switch to the AUTO position.
• Set the WELDING TERMINALS switch to the
REMOTELY CONTROLLEDposition. This will keep
the solid state contactor open and provide a “cold”
electrode until the triggering device (Amptrol or Arc
Start Switch) is pressed.
TABLE B4.2 – TYPICAL CURRENT RANGES1FOR TUNGSTEN ELECTRODES2
Approximate Argon Gas Flow Rate
DCEN (-) DCEP (+) C.F.H. (l/min.)
Tungsten
Electrode 1%, 2% 1%, 2% TIG TORCH
Diameter Thoriated Thoriated Nozzle
in. (mm) Tungsten Tunsten Aluminum Stainless Steel Size4, 5
0.010 (.25) 2-15 33-8 (2-4) 3-8 (2-4) #4, #5, #6
0.020 (.50) 5-20 35-10 (3-5) 5-10 (3-5)
0.40 (1.0) 15-80 35-10 (3-5) 5-10 (3-5)
1/16 (1.6) 70-150 10-20 5-10 (3-5) 9-13 (4-6) #5, #6
3/32 (2.4) 150-250 15-30 13-17 (6-8) 11-15 (5-7) #6, #7, #8
1/8 (3.2) 250-400 25-40 15-23 (7-11) 11-15 (5-7)
5/32 (4.0) 400-500 40-55 21-25 (10-12) 13-17 (6-8) #8, #10
3/16 (4.8) 500-750 55-80 23-27 (11-13) 18-22 (8-10)
1/4 (6.4) 750-1000 80-125 28-32 (13-15) 23-27 (11-13)
1When used with argon gas. The current ranges shown must be reduced when using argon/helium or pure helium shielding gases.
2Tungsten electrodes are classified as follows by the American Welding Society (AWS):
Pure EWP
1% Thoriated EWTh-1
2% Thoriated EWTh-2
2Though not yet recognized by the AWS, Ceriated Tungsten is now widely accepted as a substitute for 2% Thoriated Tungsten in AC and DC
applications.
3DCEP is not commonly used in these sizes.
4TIG torch nozzle “sizes” are in multiples of 1/16ths of an inch:
# 4 = 1/4 in. (6 mm) # 7 = 7/16 in. (11 mm)
# 5 = 5/16 in. (8 mm) # 8 = 1/2 in. (12.5 mm)
# 6 = 3/8 in. (10 mm) #10 = 5/8 in. (16 mm)
5TIG torch nozzles are typically made from alumina ceramic. Special applications may require lava nozzles, which are less prone to break-
age, but cannot withstand high temperatures and high duty cycles.
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC