CHART 1 — Select tungsten diameter and alumina nozzle based on current and application.
TYPICAL CURRENT RANGES FOR TUNGSTEN ELECTRODES (1)
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| DCEN | DCEP (+) |
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| AC |
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| Balanced Wave |
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| Unbalanced Wave |
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Tungsten | Pure and | Pure and |
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| 1%, 2% |
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| 1%, 2% |
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Electrode | 1%. | 2% | 1%, 2% |
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| Thoriated |
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| Thoriated | Alumina | |||
Diameter | Thoriated | Thoriated | Pure | Tungsten |
| Pure | Tungsten | Nozzle | ||||||
in. (mm) | Tungsten | Tungsten | Tungsten | Zirconiated |
| Tungsten | Zirconiated | Size | ||||||
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0.020 | (0.5) | 5- | 20 | (2) | 10- | 20 | 5- | 20 |
| 5- | 15 | 5- | 20 | 4, 5, 6 |
0.040 | (1.0) | 15- | 80 | (2) | 20- | 30 | 20- | 60 |
| 10- | 60 | 15- | 80 | 4, 5, 6 |
1/16 | (1.6) | 70- | 150 | 30- | 80 | 60- 120 |
| 50- 100 | 70- 150 | 5, 6 | ||||
3/32 | (2.4) | 150- | 250 | 60- 130 | 100- 180 |
| 100- 160 | 140- 235 | 6, 7, 8 | |||||
1/8 | (3.2) | 250- | 400 | 100- 180 | 160- 250 |
| 150- 210 | 225- 325 | 6, 7, 8 | |||||
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(1)With argon gas.
(2)DCEP (+) is not commonly used in these sizes.
CHART 2 — Select Collet/Collet Body or Gas Lens Collet Body based on tungsten diameter and application.
Tungsten |
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| Gas Lens | |
Electrode | Collet | Collet Body | Collet Body | |
Diameter | Part No. | Part No. | Part No. | |
in. (mm) | (Industry Ref.) | (Industry Ref.) | (Industry Ref.) | |
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0.020 (0.5) | ||||
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| (13N20) | (13N25) | (45V41) |
0.040 (1.0) | ||||
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| (13N21) | (13N26) | (45V42) |
1/16 | (1.6) | |||
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| (13N22) | (13N27) | (45V43) |
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3/32 | (2.4) | |||
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| (13N23) | (13N28) | (45V44) |
1/8 | (3.2) | |||
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| (13N24) | (13N29) | (45V45) |
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CHART 3 (Alumina Gas Nozzle) — Select alumina gas nozzle orifice size based on application.
Standard gas nozzle,
Nozzle |
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Orifice | Size | Standard Nozzle | Gas Lens | |
Diameter | (16th of | Part No. | Part No. | |
in. (mm) | an inch) | (Industry Ref.) | (Industry Ref.) | |
1/4 | (6) | 4 | ||
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| (13N08) | (53N58) |
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5/16 | (8) | 5 | ||
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| (13N09) | (53N59) |
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3/8 | (10) | 6 | ||
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| (13N10) | (53N60) |
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7/16 | (11) | 7 | ||
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| (13N11) | (53N61) |
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1/2 | (12.5) | 8 | — | |
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| (13N12) |
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5/8 | (16) | 10 | — | |
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| (13N13) |
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