1、English price group 9No 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 87.040!%XL5“2534118www.din.deDIN EN ISO 4628-7
2、Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 7: Assessment of degree of chalking by velvet method (ISO 4628-7:2016);English version EN ISO 4628-7:2016,English translation of DIN EN ISO 4
3、628-7:2016-07Beschichtungsstoffe Beurteilung von Beschichtungsschden Bewertung der Menge und Gre von Schden und der Intensitt von gleichmigen Vernderungen im Aussehen Teil 7: Bewertung des Kreidungsgrades nach dem Samtverfahren (ISO 4628-7:2016);Englische Fassung EN ISO 4628-7:2016,Englische bersetz
4、ung von DIN EN ISO 4628-7:2016-07Peintures et vernis valuation de la dgradation des revtements Dsignation de la quantit et de la dimension des dfauts, et de lintensit des changements uniformes daspect Partie 7: valuation du degr de farinage selon la mthode du morceau de velours (ISO 4628-7:2016);Ver
5、sion anglaise EN ISO 4628-7:2016,Traduction anglaise de DIN EN ISO 4628-7:2016-07SupersedesDIN EN ISO 4628-7:2004-01www.beuth.deDocument comprises 13 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.July 201607.16DIN EN ISO 4628
6、-7:2016-07 2 A comma is used as the decimal marker. National foreword This document (EN ISO 4628-7:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible
7、German body involved in its preparation was DIN-Normenausschuss Beschichtungs-stoffe und Beschichtungen (DIN Standards Committee Coatings and Coating Materials), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 4628 consists of the follo
8、wing parts, under the general title Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance: Part 1: General introduction and designation system Part 2: Assessment of degree of blistering Part 3: Assess
9、ment of degree of rusting Part 4: Assessment of degree of cracking Part 5: Assessment of degree of flaking Part 6: Assessment of degree of chalking by tape method Part 7: Assessment of degree of chalking by velvet method Part 8: Assessment of degree of delamination and corrosion around a scribe or o
10、ther artificial defect Part 10: Assessment of degree of filiform corrosion The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 4628-1 DIN EN ISO 4628-1 ISO 4628-6 DIN EN ISO 4628-6 ISO 8503-1 DIN EN ISO 8503-1 ISO 13076 DIN EN ISO 13076 Ame
11、ndments This standard differs from DIN EN ISO 4628-7:2004-01 as follows: a) the pictorial reference standards for numerical chalking ratings 1 to 5 have been taken from ISO 4628-6; b) a normative reference to ISO 13076 for illumination for the visual assessment has been added. Previous editions DIN
12、EN ISO 4628-7: 2004-01 DIN EN ISO 4628-7:2016-07 3 National Annex NA (informative) Bibliography DIN EN ISO 4628-1, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 1: General introduction an
13、d designation system DIN EN ISO 4628-6, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 6: Assessment of degree of chalking by tape method DIN EN ISO 8503-1, Preparation of steel substrates
14、 before application of paints and related products Surface roughness characteristics of blast-cleaned steel substrates Part 1: Specifications and definitions for ISO surface profile comparators for the assessment of abrasive blast-cleaned surfaces DIN EN ISO 13076, Paints and varnishes Lighting and
15、procedure for visual assessments of coatings DIN EN ISO 4628-7:2016-07 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4628-7 February 2016 ICS 87.040 Supersedes EN ISO 4628-7:2003 English Version Paints and varnishes Evaluation of degradation of coatings
16、Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 7: Assessment of degree of chalking by velvet method (ISO 4628-7:2016) Peintures et vernis valuation de la dgradation des revtements Dsignation de la quantit et de la dimension des dfauts, et de linte
17、nsit des changements uniformes daspect Partie 7: valuation du degr de farinage selon la mthode du morceau de velours (ISO 4628-7:2016) Beschichtungsstoffe Beurteilung von Beschichtungsschden Bewertung der Menge und der Gre von Schden und der Intensitt von gleichmigen Vernderungen im Aussehen Teil 7:
18、 Bewertung des Kreidungsgrades nach dem Samtverfahren (ISO 4628-7:2016) This European Standard was approved by CEN on 19 December 2015. 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
19、standard without any alteration. Up-to-date lists and 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
20、in any other language made by translation under the responsibility 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
21、 Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUR
22、OPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4628-7:2016
23、 E EN ISO 4628-7:2016 (E) Contents Page 2European foreword . 3 Foreword 4 1 Scope 5 2 Normative references 5 3 Terms and definitions . 5 4 Principle . 5 5 Materials . 6 6 Assessment 6 7 Test report . 7 Bibliography 9 DIN EN ISO 4628-7:2016-07 EN ISO 4628-7:2016 (E) European foreword This document (E
24、N ISO 4628-7:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in collaboration with 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 publica
25、tion of an identical text or by endorsement, at the latest by August 2016, and conflicting national standards shall be withdrawn at the latest by August 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shal
26、l not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 4628-7:2003. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bu
27、lgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
28、Turkey and the United Kingdom. Endorsement notice The text of ISO 4628-7:2016 has been approved by CEN as EN ISO 4628-7:2016 without any modification. 3DIN EN ISO 4628-7:2016-07 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (I
29、SO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, gov
30、ernmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further mainte
31、nance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attent
32、ion is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction
33、and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformit
34、y assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test method f
35、or paints and varnishes.This second edition cancels and replaces the first edition (ISO 4628-7:2003), which has been technically revised with the following changes:a) the pictorial reference standard for numerical chalking ratings 1 to 5 have been copied from ISO 4628-6:2011;b) a normative reference
36、 to ISO 13076 for illumination for the assessment has been added.ISO 4628 consists of the following parts, under the general title Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance: Part 1: Genera
37、l introduction and designation system Part 2: Assessment of degree of blistering Part 3: Assessment of degree of rusting Part 4: Assessment of degree of cracking Part 5: Assessment of degree of flaking Part 6: Assessment of degree of chalking by tape method Part 7: Assessment of degree of chalking b
38、y velvet method Part 8: Assessment of degree of delamination and corrosion around a scribe or other artificial defect Part 10: Assessment of degree of filiform corrosion4EN ISO 4628-7:2016 (E) DIN EN ISO 4628-7:2016-07 1 ScopeThis part of ISO 4628 specifies a method suitable, in particular, for rati
39、ng the degree of chalking on white or coloured exterior coatings and coating systems on rough surfaces (i.e. those having a roughness greater than segment 4 of the reference comparator G as described in ISO 8503-1).The test method specified can also be used for the assessment of the degree of chalki
40、ng of coatings and coating systems on smooth surfaces, but the method specified in ISO 4628-6:2011 is preferable for this purpose.The test method is applicable to coatings and coating systems on mineral substrates, e.g. fibre cement, brick, concrete, and renderings, independent of the structure of t
41、he surface. The method can be used quite effectively by experienced operators and is recommended for laboratory use as well as for on-site evaluation.NOTE 1 When a reference to this test method is included in specifications, the test conditions (i.e. weathering method and substrate) have to be agree
42、d between the interested parties.NOTE 2 The method described in this part of ISO 4628 is a relative ranking method and is therefore not suitable for use in agreements between parties. See, however, the Note to Table 1.NOTE 3 Refer to ISO 4628-1 for the designation system for quantity and size of def
43、ects and the intensity of changes in appearance of coatings, as well as general principles of the system.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition c
44、ited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 13076, Paints and varnishes Lighting and procedure for visual assessments of coatings3 Terms and definitionsFor the purposes of this document, the following terms and definition
45、s apply.3.1chalkingappearance of a loosely adherent fine powder on the surface of a film arising from the degradation of one or more of its constituents4 PrincipleLoosely adherent powder is removed from the coating under test, using a suitable fabric. The degree of chalking is assessed with referenc
46、e to a rating scale.5EN ISO 4628-7:2016 (E) DIN EN ISO 4628-7:2016-07 5 Materials5.1 Fabric, as agreed between the interested parties, to rub against the surface being tested. Black wool felt, velvet, and velveteen have proven particularly effective for light coatings and a white fabric for dark coa
47、tings.6 AssessmentCarry out the assessment under good illumination, as specified in ISO 13076.Carry out the assessment in duplicate, unless otherwise agreed.Using the index finger, press the fabric against the coating being tested with firm pressure. Rotate the fabric once through an angle of 180. R
48、emove the fabric and assess the degree of chalking under diffuse light in reference to the rating scheme shown in Table 1.A mechanical apparatus should be preferred if comparable results are obtained; the coating may also be wiped once with the fabric.Table 1 Rating scheme for designating the degree
49、 of chalking (derived from ISO 4628-1:2016, Table 3)Rating Degree of chalking0 unchanged, i.e. no perceptible chalking1 very slight, i.e. just perceptible chalking2 slight, i.e. clearly perceptible chalking3 moderate, i.e. very clearly perceptible chalking4 considerable, i.e. pronounced chalking5 severe, i.e. intense chalkingNOTE If specified or agreed, a simpler rating system can be used. However, in such cases, the meanings of the ratings in
