B-11
OPERATION
SETTINGS WHEN USING THE K930-2 TIG MODULE
• Set the WELD MODE switch to the TOUCH START TIG setting.
• Set the RUN / STOP / IDLE switch to the AUTO IDLE / RUN
position.
• Set the WELDING TERMINALS switch to the REMOTELY
CONTROLLED position. This will keep the solid state contactor
open and provide a “cold” electrode until the triggering
device (amptrol or arc start switch) is pressed.
VANTAGE
®
435X
Table B.2 TYPICAL CURRENT RANGES
(1)
FOR TUNGSTEN ELECTRODES
(2)
DCEN (-)
DCEP (+)
Approximate Argon Gas Flow Rate
L/min (cfm)
Tungsten
Electrode
1%, 2%
1%, 2%
TIG TORCH
Diameter
Thoriated
Thoriated
Aluminum
Stainless Steel
Nozzle
mm (in)
Tungsten
Tungsten
Size
(4) (5)
.25 (0.010)
2-15
(3)
2-4 (3-8)
2-4 (3-8)
#4, #5, #6
.50 (0.020)
5-20
(3)
3-5 (5-10)
3-5 (5-10)
1.0 (0.040)
15-80
(3)
3-5 (5-10)
3-5 (5-10)
1.6 (1/16)
70-150
10-20
3-5 (5-10)
4-6 (9-13)
#5, #6
2.4 (3/32)
150-250
15-30
6-8 (13-17)
5-7 (11-15)
#6, #7, #8
3.2 (1/8)
250-400
25-40
7-11 (15-23)
5-7 (11-15)
4.0 (5/32)
400-500
40-55
10-12 (21-25)
6-8 (13-17)
#8, #10
4.8 (3/16)
500-750
55-80
11-13 (23-27)
8-10 (18-22)
6.4 (1/4)
750-1000
80-125
13-15 (28-32)
11-13 (23-27)
(1)
When used with argon gas. The current ranges shown must be reduced when using argon/helium or pure helium shielding gases.
(2)
Tungsten electrodes are classified as follows by the American Welding Society (AWS):
Pure
EWP
1% Thoriated
EWTh-1
2% Thoriated
EWTh-2
Though not yet recognized by the AWS, Ceriated Tungsten is now widely accepted as a substitute for 2% Thoriated Tungsten in
AC and DC applications.
(3)
DCEP is not commonly used in these sizes.
(4)
TIG torch nozzle “sizes” are in multiples of 1/16ths of an inch:
# 4 = 1/4 in.
6 mm
# 5 = 5/16 in.
8 mm
# 6 = 3/8 in.
10 mm
# 7 = 7/16 in.
11 mm
# 8 = 1/2 in.
12.5 mm
#10 = 5/8 in.
16 mm
(5)
TIG torch nozzles are typically made from alumina ceramic. Special applications may require lava nozzles, which are less prone to
breakage, but cannot withstand high temperatures and high duty cycles.