BS EN 13523-19-2011 Coil coated metals Test methods Panel design and method of atmospheric exposure testing《卷材覆层金属 试验方法 大气曝露试验的样板设计和方法》.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13523-19:2011Coil coated metals TestmethodsPart 19: Panel design and method ofatmospheric exposure testingBS EN 13523-19:2011 BRITISH STANDARDNational forewordThis British

2、Standard is the UK implementation of EN 13523-19:2011.It supersedes BS EN 13523-19:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee STI/27, Paint systems for metallic substrates.A list of organizations represented on this committee can beobtained on

3、 request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 70113 9ICS 25.220.60Compliance with a British Standard cannot confer immunity fromlegal obligations.This British

4、Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2011.Amendments issued since publicationDate Text affectedBS EN 13523-19:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13523-19 June 2011 ICS 25.220.60 Supersedes EN 13523-19:2004English Ve

5、rsion Coil coated metals - Test methods - Part 19: Panel design and method of atmospheric exposure testing Tles prlaques - Mthodes dessai - Partie 19: Modles de panneaux et mthode dessai pour les essais dexposition lextrieur Bandbeschichtete Metalle - Prfverfahren - Teil 19: Probenplatten und Verfah

6、ren zur Freibewitterung This European Standard was approved by CEN on 4 May 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

7、bibliographical references 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 re

8、sponsibility of a CEN member 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,

9、 Greece, Hungary, Iceland, 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 Man

10、agement Centre: Avenue Marnix 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 13523-19:2011: EBS EN 13523-19:2011EN 13523-19:2011 (E) 2 Contents Page Foreword 3Introduction . 51 Scope 62 Normative reference

11、s 63 Terms and definitions . 64 Apparatus . 65 Sampling . 76 Test panels . 77 Procedure . 98 Expression of results 9Annex A (informative) Parameters that can influence exposure results . 15Annex B (informative) ECCA outdoor exposure sites . 17Bibliography 18BS EN 13523-19:2011EN 13523-19:2011 (E) 3

12、Foreword This document (EN 13523-19:2011) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat 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 or by endorsement, at the

13、 latest by December 2011, and conflicting national standards shall be withdrawn at the latest by December 2011. This document supersedes EN 13523-19:2004. The main technical changes are: Annex B has been amended with the actual ECCA exposure sites. Attention is drawn to the possibility that some of

14、the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. EN 13523, Coil coated metals Test methods, consists of the following parts: Part 0: General introduction and list of test methods Part 1:

15、 Film thickness Part 2: Specular gloss Part 3: Colour difference Instrumental comparison Part 4: Pencil hardness Part 5: Resistance to rapid deformation (impact test) Part 6: Adhesion after indentation (cupping test) Part 7: Resistance to cracking on bending (T-bend test) Part 8: Resistance to salt

16、spray (fog) Part 9: Resistance to water immersion Part 10: Resistance to fluorescent UV radiation and water condensation Part 11: Resistance to solvents (rubbing test) Part 12: Resistance to scratching Part 13: Resistance to accelerated ageing by the use of heat Part 14: Chalking (Helmen method) Par

17、t 15: Metamerism Part 16: Resistance to abrasion BS EN 13523-19:2011EN 13523-19:2011 (E) 4 Part 17: Adhesion of strippable films Part 18: Resistance to staining Part 19: Panel design and method of atmospheric exposure testing Part 20: Foam adhesion Part 21: Evaluation of outdoor exposed panels Part

18、22: Colour difference Visual comparison Part 23: Colour stability in humid atmospheres containing sulfur dioxide Part 24: Resistance to blocking and pressure marking Part 25: Resistance to humidity Part 26: Resistance to condensation of water Part 27: Resistance to humid poultice (Cataplasm test) Pa

19、rt 29: Resistance to environmental soiling (Dirt pick-up and striping) According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmar

20、k, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 13523-19:2011EN 13523-19:2011 (E) 5 Introduction In the past

21、it has been common practice in the northern hemisphere to expose test panels at 45 facing South. Whilst this orientation is appropriate for degradation of the organic coating, investigations have shown that it has little bearing on the overall corrosion performance of the product when used in buildi

22、ng applications. For example, the 45 facing South exposure takes no account of overhangs which produce unwashed areas; sheet overlaps; low pitched roofing, etc. The Outdoor Exposure Committee of European Coil Coating Association (ECCA) designed an exposure system which aligns more closely with “real

23、 life“ situations and which is the basis of this part of EN 13523. Three panel orientations are specified: a) PANEL 1: 45 to horizontal facing South. The traditional orientation for evaluation of organic coatings: colour change, gloss change, chalking, etc.; b) PANEL 2: 90 to horizontal facing North

24、, with an overhang for evaluating general corrosion on side cladding particularly in unwashed areas; c) PANEL 3: 5 to horizontal facing South. This panel which includes an overlap is principally for evaluating general corrosion in roofing applications. The selection of one or more panel designs and

25、their corresponding orientations will be chosen according to the exposure data required. BS EN 13523-19:2011EN 13523-19:2011 (E) 6 1 Scope This part of EN 13523 specifies the panel design and describes the procedure for determining the resistance to outdoor exposure of an organic coating on a metall

26、ic substrate. 2 Normative references The following referenced documents are indispensable for the application 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. EN 13523-0:2

27、001, Coil coated metals Test methods Part 0: General introduction and list of test methods EN 13523-2, Coil coated metals Test methods Part 2: Specular gloss EN 13523-3, Coil coated metals Test methods Part 3: Colour difference Instrumental comparison EN 13523-7:2001, Coil coated metals Test methods

28、 Part 7: Resistance to cracking on bending (T-bend test) EN 13523-14, Coil coated metals Test methods Part 14: Chalking (Helmen method) EN 13523-21, Coil coated metals Test methods Part 21: Evaluation of outdoor exposed panels EN ISO 17872, Paints and varnishes Guidelines for the introduction of scr

29、ibe marks through coatings on metallic panels for corrosion testing (ISO 17872:2007) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13523-0:2001 apply. 4 Apparatus 4.1 Rack design The typical rack configuration accommodating the three elevations is s

30、hown in Figures 4 a), 4 b) and 5. The actual design and material of manufacture is at the discretion of the individual taking into consideration the corrosivity on the exposure site. Similarly the method of fixing the panels to the rack is up to the individual, but they shall be fixed in such a way

31、as to avoid bimetallic corrosion. The material to provide the overhang on the North-facing panel shall be manufactured from an inert rigid material such as polymethyl methacrylate 1)and shall give an overhang on the panel of approximately 65 mm (see 2 in Figure 4 a). 4.2 Apparatus to prepare 90 vari

32、able radius bends Forming the 90 variable radius bends can be made either manually or by an automatic press fitted with a variable radius forming tool and die. The typical design of a suitable tool and die is illustrated in Figure 6 and defined in EN 13523-7:2001, 8.2.2. 1) e.g. Perspex. Perspex is

33、the trade name of a product supplied by Perspecs Distribution Ltd. This information is given for the convenience of users of this document and does not constitute an endorsement of the product named. Equivalent products may be used if they can be shown to lead to the same results. BS EN 13523-19:201

34、1EN 13523-19:2011 (E) 7 4.3 Cutting tool, with a hard metal tip having a radius or width capable of exposing at least 0,2 mm of metal substrate in accordance with EN ISO 17872. NOTE If the substrate is zinc- or zinc-alloy coated steel, the intention is that the scratch should penetrate as far as the

35、 zinc coating and not further, to the steel. 4.4 Stainless steel self-tapping fixing screws, with integral sealing ring and plastics cover2)(see Figures 2 and 3). 4.5 Aluminium domed rivets, with a stainless steel core (see Figures 2 and 3). 5 Sampling Shall be in accordance with EN 13523-0. 6 Test

36、panels 6.1 General Shall be in accordance with EN 13523-0. 6.2 Panel preparation For exposure at all three orientations, five blanks per set are required (see Figures 1, 2 and 3). Panels can be made from laboratory prepared samples or coil line production runs. All panels shall be prepared from an i

37、nitial blank size of 200 mm 150 mm. The 200 mm shall be in the rolling direction. When preparing panels, all cuts and drill holes shall be made such that metal burrs occur on the side of the panel which is not exposed. All panels shall have a 90 angle bend with a variable radius from 1T to 3T, as de

38、scribed in EN 13523-7. 6.3 Panel design 6.3.1 PANEL 1 (45 facing South, see Figure 1) Panel 1 consists of a single blank into which a 90 variable radius bend has been produced, 25 mm from and parallel to the 200 mm edge. The variable radius is from 1T to 3T as defined in EN 13523-7. All dimensions a

39、re shown in Figure 1. This panel shall have all edges protected and shall be mounted such that the tightest bend radius is at the bottom of the panel. The method of protecting edges is at the discretion of the individual but recommended practices are taping or coating of the edges. This panel shall

40、be used predominantly to measure changes in colour according to EN 13523-3, changes in gloss according to EN 13523-2 and degree of chalking according to EN 13523-14. 2) E.g. SELA screws. BS EN 13523-19:2011EN 13523-19:2011 (E) 8 6.3.2 PANEL 2 (90 facing North, see Figure 2) 6.3.2.1 General Panel 2 c

41、onsists of two blanks each exhibiting: variable radius bends, scribe marks and stainless steel screw fixings with plastics covers. The panel is exposed under an overhang as described in 4.1 and shown in Figure 4. This panel shall be mounted such that the variable radius bend is vertical with the tig

42、htest radius on the bend at the bottom of the panel. 6.3.2.2 Variable radius bends These bends should be prepared such that the panels are mirror images, i.e. when they are riveted together, the tightest radius bends occur at the same end of the panel. Position and dimensions of radius bends are sho

43、wn in Figure 2. To form the variable radius bend in the right hand panel it is necessary to rotate the variable radius punch through 180 in the press. 6.3.2.3 Scribe marks Two scribes on each blank are arranged at 90 to each other. The scribes are 40 mm in length with the vertical scribe starting at

44、 10 mm from the middle of the horizontal scribe. When the blanks are riveted together, the scribes should be at opposite ends of the panels as shown in Figure 2. The scribes are prepared by means of the cutting tool (4.3) and extend down just through the organic coating. The scribed indentation shal

45、l exhibit a V-shaped profile and shall expose at least 0,2 mm of metal substrate. The use of any cutting tool other than described in 4.3 is not permitted. 6.3.2.4 Fixings Two stainless steel fixing screws (4.4) shall be located at opposite ends of the blanks when riveted together, approximately 30

46、mm from the bends and 50 mm from the top and bottom edges as shown in Figure 2. 6.3.2.5 Rivets The two blanks shall be riveted together such that the left hand blank overlaps the right one by 20 mm with the tightest radius of both blanks to the bottom of the panel. Rivets shall be domed aluminium wi

47、th a stainless steel core. 6.3.2.6 Edges All edges shall be uncoated as the main purpose of the panel is to check corrosion, particularly on the unwashed area under the overhang. 6.3.3 PANEL 3 (5 facing South, see Figure 3) Panel 3 is prepared from two blanks riveted together as shown in Figure 3, i

48、.e. two blanks with 90 variable radius bends (from 1T to 3T) and overlapped by 80 mm. In this case, the widest radius of the top blank overlaps the tightest in the bottom blank. This panel shall be mounted such that the variable radius bend follows the 5 pitch with the widest radius on the bend at t

49、he bottom of the panel. A stainless steel fixing screw (4.4) is positioned as shown in Figure 3, 50 mm from the bottom of the panel and 47 mm from the edge. The blanks are riveted together as shown in Figure 3 at the mid point of the overlap, i.e. 40 mm with domed aluminium rivets with stainless steel cores. BS EN 13523-19:2011EN 13523-19:2011 (E) 9 Edges are unprotected as the panel is mainly for corrosion me

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