12-19. Troubleshooting − Burn-Through
Possible Causes | Corrective Actions |
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Excessive heat input. | Select lower amperage. Use smaller electrode. |
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| Increase and/or maintain steady travel speed. |
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12-20. Troubleshooting − Waviness Of Bead
Waviness Of Bead − weld metal that is not parallel and does not cover joint formed by base metal.
Possible Causes | Corrective Actions |
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Unsteady hand. | Use two hands. Practice technique. |
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12-21. Troubleshooting − Distortion
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| Distortion − contraction of weld met- |
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| al during welding that forces base |
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| metal to move. |
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| Base metal moves | |
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| in the direction of | |
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| the weld bead. | |
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Possible Causes |
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Excessive heat input. |
| Use restraint (clamp) to hold base metal in position. | |
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| Make tack welds along joint before starting welding operation. |
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| Select lower amperage for electrode. |
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| Increase travel speed. |
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| Weld in small segments and allow cooling between welds. |
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