Operation – Lincoln Electric VANTAGE SVM178-B Manuel d'utilisation
Page 25
OPERATION
B1.9
B1.9
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
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 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.
TABLE B1.2 – TYPICAL CURRENT RANGES
1
FOR TUNGSTEN ELECTRODES
2
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
Size
4, 5
0.010
(.25)
2-15
3
3-8
(2-4)
3-8
(2-4)
#4, #5, #6
0.020
(.50)
5-20
3
5-10
(3-5)
5-10
(3-5)
0.40
(1.0)
15-80
3
5-10
(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)
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
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)
# 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)
5
TIG 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.