TYPICAL CURRENT RANGES 1 FOR TUNGSTEN ELECTRODES2

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B-6				OPERATION				B-6
			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.

EAGLE™ 10,000

Lincoln Electric SVM192-A TYPICAL CURRENT RANGES 1 FOR TUNGSTEN ELECTRODES2, Control, Electrode

Models: SVM192-A

Summary of Welding Processes

CONTROL

ELECTRODE

CABLE

IDLE

WHEN NOT

TO START

PROCESS

USED

MODE

WELDING

TYPICAL CURRENT RANGES (1) FOR TUNGSTEN ELECTRODES(2)