Page 129 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 European Enamel Association

Fig. 5
Fig. 2 Sulphate dimple
Defective (cross section)
mill-lining material

Fig. 3 Consideration and description
Scale deposit
At first the judgement of defects is to be performed by naked eye. Often these defects
are (e.g. by scale deposit in the furnace) only imperfections because the enamel layer

beneath the defect is undamaged. Deposits on the pretreated part or deposited during
application can damage the entire layer, whereby the corrosion resistance could be in
question.

Test report
Fig. 4 In the test report to be mentioned:
Sulphate Dimple kind and origin of the test piece
place and date of testing

description of defects, number and extent
complete state of the test piece.

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