12-13. Weld Test
| 3 |
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| 3 |
2 To 3 in |
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| 2 To 3 in |
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1/4 in | 2 | 2 |
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(6.4 mm) | 1 | 1 |
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1Vise
2Weld Joint
3Hammer
Strike weld joint in direction shown. A good weld bends over but does not break.
12-14. Troubleshooting − Porosity
Porosity − small cavities or holes resulting from gas pockets in weld metal.
Possible Causes | Corrective Actions |
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Arc length too long. | Reduce arc length. |
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Damp electrode. | Use dry electrode. |
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Workpiece dirty. | Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before |
| welding. |
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12-15. Troubleshooting − Excessive Spatter
Excessive Spatter − scattering of molten metal particles that cool to solid form near weld bead.
Possible Causes | Corrective Actions |
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Amperage too high for electrode. | Decrease amperage or select larger electrode. |
Arc length too long or voltage too high.
Reduce arc length or voltage.
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