1、June 2011 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 25
2、.220.50!$s,“1800961www.din.deDDIN EN ISO 28722Vitreous and porcelain enamels Characteristics of enamel coatings applied to steel panels intended forarchitecture (ISO 28722:2008)English translation of DIN EN ISO 28722:2011-06Emails und Emaillierungen Merkmale von Emailschichten auf Architektur-Stahlp
3、aneelen (ISO 28722:2008)Englische bersetzung von DIN EN ISO 28722:2011-06maux vitrifis Caractristiques des couches dmail appliques sur les panneaux dacier destins larchitecture (ISO 28722:2008)Traduction anglaise de DIN EN ISO 28722:2011-06SupersedesDIN EN 14431:2004-12www.beuth.deDocument comprises
4、 pagesIn case of doubt, the German-language original shall be considered authoritative.1206.11 DIN EN ISO 28722:2011-06 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 107 “Metallic and other inorganic coatings” in collaboratio
5、n with Technical Committee CEN/TC 262 “Metallic and other inorganic coatings” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-01-63 AA Prfung von Email
6、s und Emaillierungen. The European Standard EN 101 referred to in this standard was withdrawn without replacement in 2009; EN 15771 can be used instead. ISO 28722 was prepared by the European Committee for Standardization (CEN) as EN 14431 and was adopted as ISO Standard under the “fast-track-proced
7、ure” by Technical Committee ISO/TC 107. ISO 28722 published in 2008 was then adopted by CEN/TC 262 under the “unique acceptance procedure (UAP)” as European Standard EN ISO 28722, replacing EN 14431. The DIN Standards corresponding to the International Standards referred to in this document are as f
8、ollows: ISO 105-J03 DIN EN ISO 105-J03 ISO 2178 DIN EN ISO 2178 ISO 2813 DIN EN ISO 2813 ISO 4532 DIN ISO 4532 ISO 8289 DIN EN ISO 8289 ISO 15695 DIN EN ISO 15695 ISO 28706-1 DIN EN ISO 28706-1 ISO 28706-3 DIN EN ISO 28706-3 Amendments This standard differs from DIN EN 14431:2004-12 as follows: a) t
9、he number of the standard has been changed; b) (German version only) in the title and throughout the document, the terms berzug and berzge have been replaced by Schicht and Schichten (coating/coatings) respectively; c) the standard has been editorially revised. Previous editions DIN EN 14431: 2004-1
10、2 DIN EN ISO 28722:2011-06 3 National Annex NA (informative) Bibliography DIN EN 15771, Vitreous and porcelain enamels Determination of surface scratch hardness according to the Mohs scale DIN EN ISO 105-J03, Textiles Tests for colour fastness Part J03: Calculation of colour differences DIN EN ISO 2
11、178, Non-magnetic coatings on magnetic substrates Measurement of coating thickness Magnetic method DIN EN ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 und 85 DIN EN ISO 8289, Vitreous and porcelain enamels Low voltage test for detecting and loc
12、ating defects DIN EN ISO 15695, Vitreous and porcelain enamels Determination of scratch resistance of enamel finishes DIN EN ISO 28706-1, Vitreous and porcelain enamels Determination of resistance to chemical corrosion Part 1: Determination of resistance to chemical corrosion by acids at room temper
13、ature DIN EN ISO 28706-2, Vitreous and porcelain enamels Determination of resistance to chemical corrosion Part 2: Determination of resistance to chemical corrosion by boiling acids, boiling neutral liquids and/or their vapours DIN ISO 4532, Vitreous and porcelain enamels Determination of the resist
14、ance of enamelled articles to impact Pistol test DIN EN ISO 28722:2011-06 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 28722 March 2011 ICS 25.220.50 Supersedes EN 14431:2004English Version Vitreous and porcelain enamels - Characteristics of enamel coat
15、ings applied to steel panels intended for architecture (ISO 28722:2008) maux vitrifis - Caractristiques des couches dmail appliques sur les panneaux dacier destins larchitecture (ISO 28722:2008) Emails und Emaillierungen - Merkmale von Emailschichten auf Architektur-Stahlpaneelen (ISO 28722:2008) Th
16、is European Standard was approved by CEN on 3 March 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical referenc
17、es concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN me
18、mber into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icelan
19、d, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue M
20、arnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 28722:2011: EContents DIN EN ISO 28722:2011-06 EN ISO 28722:2011 (E) 2 Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5
21、4 Requirements for heavy and light gauge steel enamelled panels5 4.1 Steel 5 4.2 Application of coating .5 4.3 Final thickness of fired enamel 5 5 Functional characteristics of enamel coating 6 5.1 Adherence test.6 5.2 Porosity test .6 5.3 Abrasion resistance 6 5.4 Impact resistance.7 5.5 Surface ha
22、rdness (Mohs)7 5.6 Scratch resistance.7 5.7 Flatness 7 5.8 Acid resistance 7 6 Aesthetic characteristics of enamel coating 7 6.1 Surface appearance.7 6.2 Gloss .7 6.3 Colour .8 7 Resistance to graffiti .8 Foreword The text of ISO 28722:2008 has been prepared by Technical Committee ISO/TC 107 “Metall
23、ic and other inorganic coatings” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 28722:2011 by Technical Committee CEN/TC 262 “Metallic and other inorganic coatings” the secretariat of which is held by BSI. This European Standard shall be given the statu
24、s of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2011, and conflicting national standards shall be withdrawn at the latest by September 2011. Attention is drawn to the possibility that some of the elements of this document may be the
25、subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14431:2004. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
26、this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerl
27、and and the United Kingdom. Endorsement notice The text of ISO 28722:2008 has been approved by CEN as a EN ISO 28722:2011 without any modification. DIN EN ISO 28722:2011-06 EN ISO 28722:2011 (E) 3 1 Scope This International Standard specifies the requirements for enamel-coated, plane, cold-rolled, h
28、eavy- and light-gauge steel panels intended for interior and exterior architectural use. It includes the functional and aesthetic characteristics and resistance to graffiti of these panels and the related coatings. 2 Normative references The following referenced documents are indispensable for the a
29、pplication of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 105-J03, Textiles Tests for colour fastness Part J03: Calculation of colour differences (including Technica
30、l Corrigendum 1:1996 and Technical Corrigendum 2:2006) ISO 2178, Non-magnetic coatings on magnetic substrates Measurement of coating thickness Magnetic method ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85 (including Technical Corrigendum
31、1:1997) ISO 4532, Vitreous and porcelain enamels Determination of the resistance of enamelled articles to impact Pistol test ISO 8289:2000, Vitreous and porcelain enamels Low voltage test for detecting and locating defects ISO 15695, Vitreous and porcelain enamels Determination of scratch resistance
32、 of enamel finishes (including Technical Corrigendum 1:2000) ISO 28706-1:2008, Vitreous and porcelain enamels Determination of resistance to chemical corrosion Part 1: Determination of resistance to chemical corrosion by acids at room temperature ISO 28706-2:2008, Vitreous and porcelain enamels Dete
33、rmination of resistance to chemical corrosion Part 2: Determination of resistance to chemical corrosion by boiling acids, boiling neutral liquids and/or their vapours EN 101, Ceramic tiles Determination of scratch hardness of surface according to Mohs EN 10209:1996, Cold rolled low carbon steel flat
34、 products for vitreous enamelling Technical delivery conditions EN 14430, Vitreous and porcelain enamels High voltage test DIN EN ISO 28722:2011-06 EN ISO 28722:2011 (E) 4 ASTM C 501, Standard Test Method for Relative Resistance to Wear of Unglazed Ceramic Tile by the Taber Abraser 3 Terms and defin
35、itions For the purposes of this document, the following terms and definitions apply. 3.1 vitreous enamel porcelain enamel substantially vitreous, or glassy, inorganic coating bonded to metal by fusion at a temperature above 500 C NOTE 1 This coating can be applied for protective, functional and/or d
36、ecorative purposes. NOTE 2 It is produced by the application of powdered inorganic glass, dry or suspended in water, on to the metal surface, and its subsequent fusion bonding. The fused coating exhibits a cubic thermal expansion of between 150 107/K and 450 107/K in the temperature range 20 C to 10
37、0 C, the actual value varying specifically with the type of substrate and field of application. 3.2 enamelled heavy-gauge steel panel cold-rolled steel panel that is first formed and then enamelled, either individually or in batches NOTE Commonly, the thickness of steel substrate for enamelled heavy
38、-gauge steel panels is greater than 0,75 mm. 3.3 enamelled light-gauge steel panel panel made by cutting the porcelain- or vitreous-enamelled top skin material produced in the enamelled condition on a continuous coil coating line, and laminating it on to a suitable core material or sandwich which pr
39、ovides its shape and strength NOTE Commonly the thickness of the steel for the top skin for enamelled light-gauge steel panels is 0,30 mm to 0,75 mm. 4 Requirements for enamelled heavy- and light-gauge steel panels 4.1 Steel The steel to be enamelled shall conform to the requirements of EN 10209, un
40、less otherwise agreed by the interested parties. The steel thickness shall be more than 0,75 mm for enamelled heavy-gauge steel panels and from 0,30 mm to 0,75 mm for enamelled light-gauge steel panels. 4.2 Application of coating A minimum of two layers of enamel shall be applied over the external p
41、anel surface and a minimum of one layer on the internal panel surface. 4.3 Final thickness of fired enamel When determined using the method given in ISO 2178, the final enamel thickness on the faces of the panel shall be as given in Table 1. DIN EN ISO 28722:2011-06 EN ISO 28722:2011 (E) 5 Table 1 F
42、inal thickness of fired enamel Final enamel thickness m Type of panel External face Internal face Heavy gauge 180 to 500 W 100 Light gauge 75 to 275 W 60 The maximum thicknesses may be exceeded to achieve a particular aesthetic appearance, subject to agreement between the interested parties. 5 Funct
43、ional characteristics of enamel coating 5.1 Adherence test When determined in accordance with the procedure given in EN 10209:1996, Annex D, the adherence of the enamel to the metallic substrate shall be at least Class 3. The test shall be carried out on pieces fired in parallel to the production pa
44、nels. Because the adherence is influenced by refiring processes, the test shall be performed after the final firing. 5.2 Porosity test The enamel coat shall not contain defects which could give rise to localized corrosion. When tested in accordance with EN 14430, or method A or B of ISO 8289:2000, t
45、he number of open pores detected shall have the limits given in Table 2. NOTE No open-pore limit is specified for dry interior applications. Table 2 Limits for open pores Method Pores m2EN 14430 max. 10 ISO 8289:2000, method A max. 5 ISO 8289:2000, method B max. 10 When used for exterior building pa
46、rts, the back and edges of the panel shall be adequately protected from corrosion. In the case of heavy-gauge panels, particular attention shall be given to the protection or concealment of edges within the design and the enamel application. For light-gauge panels, particular attention shall be give
47、n to the protection or concealment of cut edges during panel assembly or installation. 5.3 Abrasion resistance When determined using the Taber apparatus in accordance with ASTM C 501, using S 33 emery paper and a 1 kg weight, the resistance to abrasion, given as the loss in mass after 1 000 revoluti
48、ons, shall be a maximum of 0,1 g. This test shall not serve as guidance for assessing loss in gloss. DIN EN ISO 28722:2011-06 EN ISO 28722:2011 (E) 6 5.4 Impact resistance Determine the resistance to impact using the method given in ISO 4532. When activating the pistol with a force of 20 N, there shall be no damage over 2 mm in diameter after 24 h. NOTE The mark of the striking bolt is not regarded as damage (see ISO 4532). 5.5 Surface hardn
