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Finishing
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Anodised aluminium – Sulphuric acid process
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Defect |
Typical cause |
Analysis to confirm cause |
Remedy |
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Black or brown smut or stain |
Subscribers only |
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Bloomed anodic film |
Subscribers only |
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Burning |
Subscribers only |
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Dye uptake inconsistent |
Subscribers only |
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Pitting of the aluminium surface |
Subscribers only |
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Soft coating |
Subscribers only |
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Surface marking through inadequate post anodising sealing |
Subscribers only |
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Thickness low |
Subscribers only |
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