Operation, Typical current ranges, For tungsten electrodes – Lincoln Electric EAGLE SVM192-A User Manual
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OPERATION
B-6
B-6
EAGLE™ 10,000
Summary of Welding Processes
CONTROL
ELECTRODE
CABLE
IDLE
WHEN NOT
TO START
PROCESS
USED
MODE
WELDING
WELDING
STICK
No
AUTO
Hot
Touch electrode to work.
Welding starts immediately
and engine goes to high
idle.
WIRE FEED, LN-25 WITH
No
AUTO
Cold
Press gun trigger, LN-25
INTERNAL CONTACTOR
contactor closes. Welding
starts immediately and
engine goes to high idle.
NOTE: Output Control
must be set above “3”
TIG, TIG MODULE WITH
Yes
High
Cold
Press Arc Start Switch
WITH CONTACTOR KIT
contactor closes,
CONTROL CABLE, & ARC
welding starts immediately.
START SWITCH
WIRE FEED, LN-15
No
High
Cold
Press gun trigger.
ACROSS the ARC
LN-15 contactor closes,
(has internal contactor)
Welding starts immediately
Note: Output Control must
be set above “3”.
TYPICAL CURRENT RANGES
(1)
FOR TUNGSTEN ELECTRODES
(2)
Tungsten Electrode
DCEN (-)
DCEP (+)
Approximate Argon Gas Flow
TIG TORCH
Diameter in. (mm)
Flow Rate C.F.H. ( l /min.)
Nozzle Size (4), (5)
1%, 2% Thoriated
1%, 2% Thoriated
Aluminum
Stainless Steel
Tungsten
Tungsten
.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)
0.040
(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
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 = _ 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.