Ytbehandling och ytbeläggning

Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: CEN
Svarsdatum: den 7 apr 2019
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This document specifies a gravimetric method for determining the mass per unit area (surface density) of anodic oxidation coatings on aluminium and its alloys.

The method is applicable to all oxidation coatings formed by anodizing aluminium and its alloys, either cast or wrought, and is suitable for most aluminium alloys, except those in which the copper content is greater than 6 %.

NOTE 1 A high content of copper in the alloy can lead to increased dissolution of the basis aluminium.

NOTE 2 If the thickness is known with sufficient precision (for example, using the method specified in ISO 2128, (1)), determination of the mass per unit area (surface density) of the coatings will enable its apparent density to be calculated. Conversely, if the conditions of application of the coating and its density are known, the determination of its mass per unit area (surface density) can permit calculation of the average mass and an approximate evaluation of the thickness (see the Note in Clause 9).

Ämnesområden: Ytbehandling
Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: ISO
Svarsdatum: den 7 apr 2019
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This document specifies the test method using electromotive force test apparatus for assessment of chemical resistance of anodic oxidation coatings on aluminium and its alloys.

Ämnesområden: Emalj
Kommittébeteckning: SIS/TK 116 (Oorganiska ytbeläggningar)
Källa: ISO
Svarsdatum: den 18 apr 2019
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This part of ISO 6370 specifies a test method for determining the resistance of vitreous and porcelain enamel coatings to abrasion by rubbing, grinding or other mechanical effects.

Ämnesområden: Ytbehandling
Kommittébeteckning: SIS/TK 116 (Oorganiska ytbeläggningar)
Källa: ISO
Svarsdatum: den 20 apr 2019
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This International Standard describes the test method to measure a friction coefficient of chemical conversion coating sheet products and coiled products.

It measures the friction coefficient of test pieces without specimen deformation during the test.

Test results can be changed by test conditions such as surface state, normal force, sliding velocity and temperature. Therefore test conditions shall be specified.

This International Standard is permitted to be applied under the same conditions to measure or compare friction properties of Galvanized, lubricated, resin coated steel sheet.

Kommittébeteckning: SIS/TK 116 (Oorganiska ytbeläggningar)
Källa: CEN
Svarsdatum: den 22 maj 2019
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This part of ISO 14713 provides guidelines and recommendations regarding the general principles of design which are appropriate for articles to be hot dip galvanized after fabrication (e.g., to ISO 1461) for corrosion protection, for example, articles manufactured in accordance with EN 1090-2.

The protection afforded by the hot dip galvanized coating to the article will depend upon the method of application of the coating, the design of the article and the specific environment to which the article is exposed. The hot dip galvanized article can be further protected by application of additional coatings (outside the scope of this part of ISO 14713), such as organic coatings (paints or powder coatings). When applied to hot dip galvanized articles, this combination of coatings is often known as a "duplex system".

Specific product-related requirements (e.g. for hot dip galvanized coatings on tubes or fasteners, etc.) will take precedence over these general recommendations.

This standard does not apply to hot dip galvanized coatings applied to continuous sheet (e.g. to EN 10346).

Ämnesområden: Emalj
Kommittébeteckning: SIS/TK 116 (Oorganiska ytbeläggningar)
Källa: CEN
Svarsdatum: den 22 maj 2019
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This document specifies two low voltage tests for detecting and locating defects that extend to the basis metal in vitreous and porcelain enamel coatings.

Method A (electrical) is suitable for the rapid detection and determination of the general location of defects. Method B (optical), based on colour effects, is suitable for the more precise detection of defects and their exact locations. Both methods are commonly applied to flat surfaces. For more intricate shapes such as undulated and/or corrugated surfaces ISO 8289-2 has to be applied.

NOTE 1 Selection of the correct test method is critical to distinguish the areas of increased conductivity detected by Method B from actual pores that extend to the basis metal, which can be detected by both methods.

NOTE 2 The low voltage test is a non-destructive method of detecting defects (see Clause 3) and therefore, is completely different from the high voltage test specified in ISO 2746. The result of high and low voltage test are not comparable and will differ.