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Excessive hydrogen, oxygen, |
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Change electrode, protect arc from |
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nitrogen or moisture in welding |
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excessive drafts. |
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atmosphere. |
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High rate of weld freezing. |
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Increase heat input, preheat. |
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High sulphur base metal. |
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Use EXX16 electrodes or low sulphur steels. |
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Oil, paint or rust on steel |
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Clean joint surfaces. |
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Improper arc length, current or
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Use proper are length and control/ correct |
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electrode manipulation. |
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welding technique. |
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Excessive moisture in electrode |
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Use dry electrodes and material. |
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or joint. |
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