Symptom |
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Failure | of weld | to | 1. | Insufficient heat applied to weld. | 1. | Increase amperage; select larger electrode. | |
fuse completely with | 2. | Improper welding technique. | 2. | Widen groove to access | bottom during welding; | ||
base metal or prior |
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| keep arc on leading edge | of weld puddle; place | ||
weld bead. |
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| stringer bead in proper location at joint during weld- | |||
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| ing. |
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| 3. | Workpiece dirty. | 3. | Remove all grease, oil, moisture, coatings, rust, and | |
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| dirt from workpiece before welding. | |
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| 4. | Duty cycle exceeded. | 4. | Shut down welder and allow it to cool. | |
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Unstable arc. |
| 1. | Weld circuit polarity is incorrect. | 1. | Switch cable polarity at welder. | ||
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| 2. | Tungsten rod is contaminated (TIG). | 2. | Remove 1⁄2" of contaminated tungsten rod and prop- | |
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| erly repoint rod. |
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| 3. | Arc too long. | 3. | Shorten arc; lower torch/electrode closer to | |
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| workpiece. |
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| 4. | Workpiece is dirty or damp. | 4. | Remove all grease, oil, moisture, coatings, rust, and | |
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| dirt from workpiece before welding. | |
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| 5. | Incorrect gas or gas settings (TIG). | 5. | Use the correct gas for the welding operation; adjust | |
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| the gas flow as necessary. |
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Arc wanders. |
| 1. | Improper gas flow (TIG). | 1. | Adjust gas flow as necessary. | ||
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| 2. | Arc too long. | 2. | Shorten arc; lower torch/electrode closer to | |
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| workpiece. |
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| 3. | Contaminated electrode/tungsten rod. | 3. | Replace electrode; (TIG) Remove 1⁄2" of contami- | |
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| nated tungsten rod and properly repoint rod. | |
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| 4. | Workpiece is dirty or damp. | 4. | Remove all grease, oil, moisture, coatings, rust, and | |
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| dirt from workpiece before welding. | |
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| 5. | Incorrect gas or gas settings (TIG). | 5. | Use the correct gas for the welding operation; adjust | |
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| the gas flow as necessary. |
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Arc is | difficult | to | 1. | Weld circuit not complete. | 1. | Check clamps and cables; tighten all connections. | |
start. |
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| 2. | No or inadequate gas flow (TIG). | 2. | Check all gas hoses and connections for leaks and | |
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| tighten/replace as necessary; adjust gas flow as | |
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| necessary. |
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| 3. | Incorrect electrode/tungsten rod used. | 3. | Use correct type and size of electrode/tungsten rod. | |
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| 4. | Workpiece is dirty or damp. | 4. | Remove all grease, oil, moisture, coatings, rust, and | |
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| dirt from workpiece before welding. | |
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| 5. | Incorrect gas or gas settings (TIG). | 5. | Use the correct gas for the welding operation; adjust | |
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| the gas flow as necessary. |
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H8154 AC/DC Stick/TIG Welder |
