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Quality inspection for powder coating
Every job is inspected for imperfections and either rejected for repainting, or wrapped, ready for collection.
Reliability
Approximately 1200 jobs pass though our plants in a year. Because of our quality control we are approached only once or twice a year with concerns about our painting and this does not necessarily mean it is faulty.
Traceability
Every aspect of every job has been recorded since 1996 for traceability showing all components with dimensions, thickness, results of tests, colour, manufacturer and batch numbers of the paints used. With this information a certificate of conformity can be produced, even after the job has left our premises.
Quality inspection
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Crosshatch to test adhesion. |
Test for adhesion Cross hatch test
All jobs are cross hatched, this will give an indication of adhesion and whether the paint is cured.
The paint is cut into approximatly 2mm squares with a sharp knife. The adhesion of the paint is tested by placing adhesive tape over the area to see if the squares are removed when the tape is with drawn. |
Testing for film weaknesses
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Test for film integrity DC holiday test
The test will find film weakness like such as cracks, faults, pinholes or contamination with in the paint film.
The DC Holiday tester uses high voltage to track through areas of low electrical insulation compared to a solid film of paint.
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Testing for film thickness
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Test for finding film thickness
Contracted by Blaze Neon the Country's third largest sign maker.
For three months during 2003 Nat West required all their branches to be resigned. Signs for 700 branches were powder coated using a specially manufactured blue metallic supplied by Dupont powders. |
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