EN 13523-14:2001
(Main)Coil coated metals - Test methods - Part 14: Chalking (Helmen method)
Coil coated metals - Test methods - Part 14: Chalking (Helmen method)
This Part of EN 13523 describes the procedure for determining objectively the chalking resulting from natural or artificial weathering of an organic coating on a metallic substrate. The advantage of this procedure for measuring chalking of an organic coating is that the result can be read off immediately on an instrument. Subjective judgement by visual comparison of test specimens with referencee specimens is not necessary. Experience to date with this test method has been based mainly on artificially weathered specimens. Reproductible results can only de obtained by careful execution of the test.
Bandbeschichtete Metalle - Prüfverfahren - Teil 14: Kreiden (Verfahren nach Helmen)
Anwendungsbereich
Dieser Teil von EN 13523 beschreibt das Verfahren zum objektiven Bestimmen der Kreidung einer organischen
Beschichtung auf einem metallischen Substrat als Folge von Freibewitterung oder künstlicher Bewitterung.
Der Vorteil dieses Verfahrens zum Messen der Kreidung einer organischen Beschichtung ist, dass das Ergebnis
unmittelbar an einem Messgerät abgelesen werden kann. Eine subjektive Beurteilung durch visuellen Vergleich von
Proben mit Bezugsproben ist nicht erforderlich.
Die bisher vorliegenden Erfahrungen mit diesem Prüfverfahren basieren hauptsächlich auf künstlich bewitterten
Proben. Vergleichbare Ergebnisse können nur erwartet werden, wenn die Prüfung sorgfältig durchgeführt wird.
Besonders ist auf das Klebeband und das Aufbringen des Klebebandes auf die zu prüfende Oberfläche zu achten.
Das Prüfverfahren ist nicht anwendbar auf geprägte Beschichtungen. Bei Strukturbeschichtungen beeinflusst der
Grad der Strukturierung die Ergebnisse. Auch Schmutzansammlung kann bei freibewitterten Proben die Ergebnisse
beeinflussen.
ANMERKUNG Zum Beurteilen von Kreidung gibt es unterschiedliche Verfahren. Die nach diesen unterschiedlichen Verfahren erhaltenen
Ergebnisse sind nicht vergleichbar.
Tôles prélaquées - Méthodes d'essai - Partie 14: Farinage (méthode Helmen)
Domaine d'application
La présente partie de l'EN 13523 décrit le mode opératoire permettant de déterminer objectivement le farinage d'un revêtement organique appliqué sur un support métallique, résultant d'une exposition aux intempéries, naturelle ou artificielle.
L'avantage du présent mode opératoire de mesurage du farinage d'un revêtement organique est de permettre la lecture immédiate des résultats sur un instrument. Un jugement subjectif par comparaison visuelle des éprouvettes d'essai avec les éprouvettes témoins n'est pas nécessaire.
Actuellement, l'expérience acquise avec cette méthode d'essai est principalement basée sur une exposition artificielle aux intempéries. Des résultats reproductibles peuvent seulement être obtenus par une exécution soigneuse de l'essai. Une attention particulière doit être apportée à la qualité du ruban adhésif et à son application sur la surface d'essai.
Cette méthode d'essai ne s'applique pas aux revêtements emboutis. Dans le cas des revêtements texturés, le degré de texture risque d'influencer les relevés. L'accumulation de poussière peut également influencer les relevés pour les éprouvettes exposées aux intempéries en extérieur.
NOTE Différentes méthodes d'évaluation du farinage peuvent être utilisées. Les résultats de ces différentes méthodes ne sont pas comparables.
Kovine, zaščitene po postopku coil-coating - Metode preskušanja - 14. del: Kredanje (metoda po Helmenu)
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bandbeschichtete Metalle - Prüfverfahren - Teil 14: Kreiden (Verfahren nach Helmen)Tôles prélaquées - Méthodes d'essai - Partie 14: Farinage (méthode Helmen)Coil coated metals - Test methods - Part 14: Chalking (Helmen method)25.220.60Organske prevlekeOrganic coatings17.040.20Lastnosti površinProperties of surfacesICS:Ta slovenski standard je istoveten z:EN 13523-14:2001SIST EN 13523-14:2002en01-september-2002SIST EN 13523-14:2002SLOVENSKI
STANDARD
SIST EN 13523-14:2002
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13523-14April 2001ICS 17.040.20; 25.220.60English versionCoil coated metals - Test methods - Part 14: Chalking (Helmenmethod)Tôles prélaquées - Méthodes d'essai - Partie 14: Farinage(méthode Helmen)Bandbeschichtete Metalle - Prüfverfahren - Teil 14: Kreiden(Verfahren nach Helmen)This European Standard was approved by CEN on 18 February 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13523-14:2001 ESIST EN 13523-14:2002
Page 2EN 13523-14:2001ForewordThis European Standard has been prepared by Technical Committee CEN/TC 139 "Paints and varnishes", thesecretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by October 2001, and conflicting national standards shall be withdrawn at the latestby October 2001.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.1
ScopeThis Part of EN 13523 describes the procedure for determining objectively the chalking resulting from natural orartificial weathering of an organic coating on a metallic substrate.The advantage of this procedure for measuring chalking of an organic coating is that the result can be read offimmediately on an instrument. Subjective judgement by visual comparison of test specimens with referencespecimens is not necessary.Experience to date with this test method has been based mainly on artificially weathered specimens. Reproducibleresults can only be obtained by careful execution of the test. Special attention is paid to the adhesive tape and itsapplication to the test surface.The test method is not applicable to embossed coatings. In the case of textured coatings, the degree of texture willinfluence readings. Also dirt collection may influence readings on outdoor weathered specimens.NOTE
Different methods for assessing chalking are in use. The results of these different methods are notcomparable.2
Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 13523-0 : 2001Coil coated metals – Test methods – Part 0: General introduction and list of test methodsEN 13523-10 : 2001Coil coated metals – Test methods – Part 10: Resistance to fluorescent UV light and water condensationEN 23270 : 1991Paint and varnishes and their raw materials – Temperatures and humidities for conditioning and testing(ISO 3270:1984)EN ISO 4618-2 : 1999Paints and varnishes - Terms and definitions for coating materials - Part 2: Special terms relating to paintcharacteristics and properties (ISO
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