Ytbehandling och ytbeläggning

Ämnesområden: Ytbehandling
Kommittébeteckning: SIS/TK 134 (Svetsteknik)
Källa: CEN
Svarsdatum: den 8 aug 2019
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This document specifies the procedure for the determination of coating strength, and hence of cohesive strength in a tubular coating tensile test. The test is intended to determine the tensile coating strength parallel to the spray layers (normal to the spray direction) and to identify differences in particle bond quality. The tubular coating tensile test is suitable for sprayed coatings deposited using metallic materials (not carbides and ceramics). The tubular coating tensile test is not suitable for fused sprayed coatings deposited using self fluxing alloys. The test supports quality assurance and is intended to be applied for the purpose of coating optimisation by identifying the influences of coating parameters and spray materials on the coatings's quality. Furthermore, the coating in particular for cold sprayed coatings can be compared with the characteristics of similar solid materials and the coating's quality can be assessed. This test is not recommended for thin coatings (coating thickness < 500 µm), since massive scattering of results is to be expected here. Due to the size of the specimens, it is particularly suitable to apply the tubular coating tensile test for coating processes that use a concentrated spray jet and a highly focused spray spot, as in the case of cold spraying, high velocity flame spraying (HVOF) or plasma spraying. Applying the tubular coating tensile test for coating processes that use a broad spray jet, such as flame spraying and arc spraying, may require special spraying measures, e.g. the use of a template to ensure a nearly vertical impingement angle.
Ämnesområden: Organiska ytbeläggningar
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 10 sep 2019
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This document defines terms of the procedure for determining the adhesion of an organic coating to a metallic substrate after indentation produced by slow deformation.

The resistance to cracking can also be evaluated.

Ämnesområden: Organiska ytbeläggningar
Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 10 sep 2019
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This document specifies test procedures for assessing the effect of chemicals on the characteristics of an organic coating on a metallic substrate. It covers testing by using defined substances and to assess the change in characteristics such as discoloration, change in gloss, blistering, softening, swelling and loss of adhesion. Assessment of other phenomena can be agreed between the interested parties.

Kommittébeteckning: SIS/TK 433 (Färg och lack)
Källa: CEN
Svarsdatum: den 10 sep 2019
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This document series describes a laboratory method for testing foam adhesion to an organic coating on a metallic substrate under dry and wet conditions.