Table B.3 TYPICAL CURRENT RANGES (1)

B-7

OPERATION

B-7

 

 

 

The VANTAGE 500 CUMMINS and any high frequen- cy generating equipment must be properly grounded. See the K930-2 TIG Module operating manuals for complete instructions on installation, operation, and maintenance.

When using the TIG Module, the OUTPUT control on the VANTAGE 500 CUMMINS is used to set the maxi- mum range of the CURRENT CONTROL on the TIG Module or an Amptrol if connected to the TIG Module.

VANTAGE 500 CUMMINS SETTINGS WHEN USING THE K930-2 TIG MODULE

•Set the WELD MODE switch to the “Touch Start Tig 20-250 Setting”.

•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” elec- trode until the triggering device (Amptrol or Arc Start Switch) is pressed.

Table B.3 TYPICAL CURRENT RANGES (1)

FOR TUNGSTEN ELECTRODES (2)

 

 

DCEN (-)

DCEP (+)

Approximate Argon Gas Flow Rate

 

 

 

 

 

 

l/min (c.f.m.)

 

 

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.

VANTAGE 500 CUMMINS

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Lincoln Electric manual Operation, Table B.3 TYPICAL CURRENT RANGES, For Tungsten Electrodes, VANTAGE 500 CUMMINS
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500 specifications

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