Miller Electric CV-2 owner manual Green Band, Thorium Alloyed Tungsten Red Band

Page 24
the tungsten will become contaminated.
OM-880 Page 20
Do not use same wheel for any other job or
B. For DC Electrode Negative Welding (Figures 6-2 And 6-3)
CAUTION: HOT FLYING METAL PARTICLES can injure personnel, start fires, and dam- age equipment; TUNGSTEN CONTAMINA-
TION can lower weld quality.
Shape tungsten electrode only on grinder with proper guards in safe location wearing proper face, hand, and body protection.

Table 6-2. Tungsten Electrode Size

Electrode Diameter

 

Amperage Range - Polarity - Gas Type

 

 

 

 

 

 

Pure Tungsten

DC-Argon Electrode

DC-Argon Electrode

AC-Argon Using

AC-Argon Balanced

(Green Band)

Negative/Straight Polarity

Positive/Reverse Polarity

High Frequency

Wave Using High Freq.

 

 

 

 

 

.010”

Up to 15

*

Up to 15

Up to 10

.020”

5-20

*

5-20

10-20

.040”

15-80

*

10-60

20-30

1/16”

70-150

10-20

50-100

30-80

3/32”

125-225

15-30

100-160

60-130

1/8”

225-360

25-40

150-210

100-180

5/32”

360-450

40-55

200-275

160-240

3/16”

450-720

55-80

250-350

190-300

1/4”

720-950

80-125

325-450

250-400

2% Thorium Alloyed

 

 

 

 

Tungsten

 

 

 

 

(Red Band)

 

 

 

 

 

 

 

 

 

.010”

Up to 25

*

Up to 20

Up to 15

.020”

15-40

*

15-35

5-20

.040”

25-85

*

20-80

20-60

1/16”

50-160

10-20

50-150

60-120

3/32”

135-235

15-30

130-250

100-180

1/8”

250-400

25-40

225-360

160-250

5/32”

400-500

40-55

300-450

200-320

3/16”

500-750

55-80

400-500

290-390

1/4”

750-1000

80-125

600-800

340-525

Zirconium Alloyed

 

 

 

 

Tungsten

 

 

 

 

(Brown Band)

 

 

 

 

 

 

 

 

 

.010”

*

*

Up to 20

Up to 15

.020”

*

*

15-35

5-20

.040”

*

*

20-80

20-60

1/16”

*

*

50-150

60-120

3/32”

*

*

130-250

100-180

1/8”

*

*

225-360

160-250

5/32”

*

*

300-450

200-320

3/16”

*

*

400-550

290-390

1/4”

*

*

600-800

340-525

*NOT RECOMMENDED

The figures listed are intended as a guide and are a composite of recommendations from American Welding

Society (AWS) and electrode manufacturers.

S-0009/8-88

1-1/2 Times

Electrode

Diameter

2-1/2 Times

Electrode

Diameter

AC And DC

DC Electrode

 

Electrode Positive

Negative

S-0161

Figure 6-2. Properly Prepared Tungsten

Electrodes

Image 24
Contents OWNER’S Manual From Miller to You Table of Contents Page Safety Precautions and Signal Words SpecificationsGeneral Information and Safety Safety Alert Symbol and Signal WordsBIG 40 Diesel And BIG 40G Models BIG 50 Diesel ModelsInstallation or Relocation CV-2 InstallationDescription BIG 30 Diesel Cable Selector Switch S1 AC Connections OM-880 Final Procedure REMOTE-5REMOTE-5 Receptacle Information and Connections -6 REMOTE-14 REMOTE-14 Receptacle Information and Connections Figures 3-7Amphenol Electrode Cable Series Current Control Switch Figure Current CC Switch FigureOperator Controls Current Control RemoteOutput Contactor Remote Electrode POS NEGCircuit Breaker Sequence of Operation GAS Metal ARC Gmaw and Flux Cored ARC Welding FcawShielded Metal ARC Welding Smaw GAS Tungsten ARC Welding GtawShutting Down Maintenance & Troubleshooting Excessive Pressure can break circuit board Tungsten Electrode -2, And Figures 6-2For AC or DC Electrode Positive Welding Fig- ure Green Band Thorium Alloyed Tungsten Red BandZirconium Alloyed Tungsten Brown Band Tungsten Preparation Troubleshooting Trouble Probable RemedyElectrical Diagram Diagram 7-2. Wiring Diagram For CV-2Parts List Main Assembly Dia Part Description Quantity Mkgs Call Miller for your local Miller distributor Owner’s Record Miller Electric Mfg. Co